Home / 15,417.18-21,275.64-8,343.48

Finding the Fourth Proportional to 15,417.18, 21,275.64 and 8,343.48

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Solution

The fourth proportional to 15,417.18, 21,275.64 and 8,343.48 is: 11,513.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.18 : 21,275.64 = 8,343.48 : x
  2. Step 2: Convert to fraction form
    15,417.18/21,275.64 = 8,343.48/x
  3. Step 3: Cross multiply
    15,417.18x = 21,275.64 × 8,343.48
  4. Step 4: Simplify right side
    15,417.18x = 177,512,876.83
  5. Step 5: Solve for x
    x = 177,512,876.83/15,417.18
  6. Step 6: Final answer
    x = 11,513.97

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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.