Home / 15,172.31-20,931.56-10,070.22

Finding the Fourth Proportional to 15,172.31, 20,931.56 and 10,070.22

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Solution

The fourth proportional to 15,172.31, 20,931.56 and 10,070.22 is: 13,892.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.31 : 20,931.56 = 10,070.22 : x
  2. Step 2: Convert to fraction form
    15,172.31/20,931.56 = 10,070.22/x
  3. Step 3: Cross multiply
    15,172.31x = 20,931.56 × 10,070.22
  4. Step 4: Simplify right side
    15,172.31x = 210,785,536.69
  5. Step 5: Solve for x
    x = 210,785,536.69/15,172.31
  6. Step 6: Final answer
    x = 13,892.78

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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.