Home / 42,318.98-63,465.69-12,728.96

Finding the Fourth Proportional to 42,318.98, 63,465.69 and 12,728.96

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Solution

The fourth proportional to 42,318.98, 63,465.69 and 12,728.96 is: 19,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,318.98 : 63,465.69 = 12,728.96 : x
  2. Step 2: Convert to fraction form
    42,318.98/63,465.69 = 12,728.96/x
  3. Step 3: Cross multiply
    42,318.98x = 63,465.69 × 12,728.96
  4. Step 4: Simplify right side
    42,318.98x = 807,852,229.38
  5. Step 5: Solve for x
    x = 807,852,229.38/42,318.98
  6. Step 6: Final answer
    x = 19,089.60

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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.