Home / 42,503.16-63,754.68-12,921.12

Finding the Fourth Proportional to 42,503.16, 63,754.68 and 12,921.12

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Solution

The fourth proportional to 42,503.16, 63,754.68 and 12,921.12 is: 19,381.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,503.16 : 63,754.68 = 12,921.12 : x
  2. Step 2: Convert to fraction form
    42,503.16/63,754.68 = 12,921.12/x
  3. Step 3: Cross multiply
    42,503.16x = 63,754.68 × 12,921.12
  4. Step 4: Simplify right side
    42,503.16x = 823,781,870.84
  5. Step 5: Solve for x
    x = 823,781,870.84/42,503.16
  6. Step 6: Final answer
    x = 19,381.66

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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.