Home / 42,390.72-63,586.98-11,226.78

Finding the Fourth Proportional to 42,390.72, 63,586.98 and 11,226.78

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Solution

The fourth proportional to 42,390.72, 63,586.98 and 11,226.78 is: 16,840.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,390.72 : 63,586.98 = 11,226.78 : x
  2. Step 2: Convert to fraction form
    42,390.72/63,586.98 = 11,226.78/x
  3. Step 3: Cross multiply
    42,390.72x = 63,586.98 × 11,226.78
  4. Step 4: Simplify right side
    42,390.72x = 713,877,035.32
  5. Step 5: Solve for x
    x = 713,877,035.32/42,390.72
  6. Step 6: Final answer
    x = 16,840.41

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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.