Home / 42,378.72-63,579.60-14,678.88

Finding the Fourth Proportional to 42,378.72, 63,579.60 and 14,678.88

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Solution

The fourth proportional to 42,378.72, 63,579.60 and 14,678.88 is: 22,022.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,378.72 : 63,579.60 = 14,678.88 : x
  2. Step 2: Convert to fraction form
    42,378.72/63,579.60 = 14,678.88/x
  3. Step 3: Cross multiply
    42,378.72x = 63,579.60 × 14,678.88
  4. Step 4: Simplify right side
    42,378.72x = 933,277,318.85
  5. Step 5: Solve for x
    x = 933,277,318.85/42,378.72
  6. Step 6: Final answer
    x = 22,022.31

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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.