Home / 31,090.29-42,904.60-16,943.13

Finding the Fourth Proportional to 31,090.29, 42,904.60 and 16,943.13

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Solution

The fourth proportional to 31,090.29, 42,904.60 and 16,943.13 is: 23,381.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,090.29 : 42,904.60 = 16,943.13 : x
  2. Step 2: Convert to fraction form
    31,090.29/42,904.60 = 16,943.13/x
  3. Step 3: Cross multiply
    31,090.29x = 42,904.60 × 16,943.13
  4. Step 4: Simplify right side
    31,090.29x = 726,938,215.40
  5. Step 5: Solve for x
    x = 726,938,215.40/31,090.29
  6. Step 6: Final answer
    x = 23,381.52

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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.