Home / 15,343,643,423.36-21,162,560,357.28-13,203,856,689.92

Finding the Fourth Proportional to 15,343,643,423.36, 21,162,560,357.28 and 13,203,856,689.92

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Solution

The fourth proportional to 15,343,643,423.36, 21,162,560,357.28 and 13,203,856,689.92 is: 18,211,281,795.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,343,643,423.36 : 21,162,560,357.28 = 13,203,856,689.92 : x
  2. Step 2: Convert to fraction form
    15,343,643,423.36/21,162,560,357.28 = 13,203,856,689.92/x
  3. Step 3: Cross multiply
    15,343,643,423.36x = 21,162,560,357.28 × 13,203,856,689.92
  4. Step 4: Simplify right side
    15,343,643,423.36x = 279,427,414,149,307,301,888
  5. Step 5: Solve for x
    x = 279,427,414,149,307,301,888/15,343,643,423.36
  6. Step 6: Final answer
    x = 18,211,281,795.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.