Home / 42,318.98-63,479.01-18,940.58

Finding the Fourth Proportional to 42,318.98, 63,479.01 and 18,940.58

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Solution

The fourth proportional to 42,318.98, 63,479.01 and 18,940.58 is: 28,411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,318.98 : 63,479.01 = 18,940.58 : x
  2. Step 2: Convert to fraction form
    42,318.98/63,479.01 = 18,940.58/x
  3. Step 3: Cross multiply
    42,318.98x = 63,479.01 × 18,940.58
  4. Step 4: Simplify right side
    42,318.98x = 1,202,329,267.23
  5. Step 5: Solve for x
    x = 1,202,329,267.23/42,318.98
  6. Step 6: Final answer
    x = 28,411.11

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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.