Home / 42,439.09-63,666.46-13,977.71

Finding the Fourth Proportional to 42,439.09, 63,666.46 and 13,977.71

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Solution

The fourth proportional to 42,439.09, 63,666.46 and 13,977.71 is: 20,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,439.09 : 63,666.46 = 13,977.71 : x
  2. Step 2: Convert to fraction form
    42,439.09/63,666.46 = 13,977.71/x
  3. Step 3: Cross multiply
    42,439.09x = 63,666.46 × 13,977.71
  4. Step 4: Simplify right side
    42,439.09x = 889,911,531.99
  5. Step 5: Solve for x
    x = 889,911,531.99/42,439.09
  6. Step 6: Final answer
    x = 20,969.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.