Home / 42,572.30-63,858.26-12,990.04

Finding the Fourth Proportional to 42,572.30, 63,858.26 and 12,990.04

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Solution

The fourth proportional to 42,572.30, 63,858.26 and 12,990.04 is: 19,485.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,572.30 : 63,858.26 = 12,990.04 : x
  2. Step 2: Convert to fraction form
    42,572.30/63,858.26 = 12,990.04/x
  3. Step 3: Cross multiply
    42,572.30x = 63,858.26 × 12,990.04
  4. Step 4: Simplify right side
    42,572.30x = 829,521,351.73
  5. Step 5: Solve for x
    x = 829,521,351.73/42,572.30
  6. Step 6: Final answer
    x = 19,485.00

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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.