Home / 31,070.11-42,882.32-18,322.53

Finding the Fourth Proportional to 31,070.11, 42,882.32 and 18,322.53

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Solution

The fourth proportional to 31,070.11, 42,882.32 and 18,322.53 is: 25,288.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,070.11 : 42,882.32 = 18,322.53 : x
  2. Step 2: Convert to fraction form
    31,070.11/42,882.32 = 18,322.53/x
  3. Step 3: Cross multiply
    31,070.11x = 42,882.32 × 18,322.53
  4. Step 4: Simplify right side
    31,070.11x = 785,712,594.67
  5. Step 5: Solve for x
    x = 785,712,594.67/31,070.11
  6. Step 6: Final answer
    x = 25,288.38

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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.