Home / 42,362.04-63,543.51-12,780.13

Finding the Fourth Proportional to 42,362.04, 63,543.51 and 12,780.13

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Solution

The fourth proportional to 42,362.04, 63,543.51 and 12,780.13 is: 19,170.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,362.04 : 63,543.51 = 12,780.13 : x
  2. Step 2: Convert to fraction form
    42,362.04/63,543.51 = 12,780.13/x
  3. Step 3: Cross multiply
    42,362.04x = 63,543.51 × 12,780.13
  4. Step 4: Simplify right side
    42,362.04x = 812,094,000.74
  5. Step 5: Solve for x
    x = 812,094,000.74/42,362.04
  6. Step 6: Final answer
    x = 19,170.33

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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.