Home / 27,637.20-38,139.84-15,700.32

Finding the Fourth Proportional to 27,637.20, 38,139.84 and 15,700.32

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Solution

The fourth proportional to 27,637.20, 38,139.84 and 15,700.32 is: 21,666.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,637.20 : 38,139.84 = 15,700.32 : x
  2. Step 2: Convert to fraction form
    27,637.20/38,139.84 = 15,700.32/x
  3. Step 3: Cross multiply
    27,637.20x = 38,139.84 × 15,700.32
  4. Step 4: Simplify right side
    27,637.20x = 598,807,692.75
  5. Step 5: Solve for x
    x = 598,807,692.75/27,637.20
  6. Step 6: Final answer
    x = 21,666.73

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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.