Home / 42,020.08-63,010.86-12,427.36

Finding the Fourth Proportional to 42,020.08, 63,010.86 and 12,427.36

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Solution

The fourth proportional to 42,020.08, 63,010.86 and 12,427.36 is: 18,635.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,020.08 : 63,010.86 = 12,427.36 : x
  2. Step 2: Convert to fraction form
    42,020.08/63,010.86 = 12,427.36/x
  3. Step 3: Cross multiply
    42,020.08x = 63,010.86 × 12,427.36
  4. Step 4: Simplify right side
    42,020.08x = 783,058,641.13
  5. Step 5: Solve for x
    x = 783,058,641.13/42,020.08
  6. Step 6: Final answer
    x = 18,635.34

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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.