Home / 31,066.61-42,869.87-18,319.17

Finding the Fourth Proportional to 31,066.61, 42,869.87 and 18,319.17

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Solution

The fourth proportional to 31,066.61, 42,869.87 and 18,319.17 is: 25,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,066.61 : 42,869.87 = 18,319.17 : x
  2. Step 2: Convert to fraction form
    31,066.61/42,869.87 = 18,319.17/x
  3. Step 3: Cross multiply
    31,066.61x = 42,869.87 × 18,319.17
  4. Step 4: Simplify right side
    31,066.61x = 785,340,344.81
  5. Step 5: Solve for x
    x = 785,340,344.81/31,066.61
  6. Step 6: Final answer
    x = 25,279.25

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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.