Home / 15,416.95-21,275.45-8,343.37

Finding the Fourth Proportional to 15,416.95, 21,275.45 and 8,343.37

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Solution

The fourth proportional to 15,416.95, 21,275.45 and 8,343.37 is: 11,513.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,416.95 : 21,275.45 = 8,343.37 : x
  2. Step 2: Convert to fraction form
    15,416.95/21,275.45 = 8,343.37/x
  3. Step 3: Cross multiply
    15,416.95x = 21,275.45 × 8,343.37
  4. Step 4: Simplify right side
    15,416.95x = 177,508,803.17
  5. Step 5: Solve for x
    x = 177,508,803.17/15,416.95
  6. Step 6: Final answer
    x = 11,513.88

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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.