Home / 42,290.44-63,430.60-11,128.12

Finding the Fourth Proportional to 42,290.44, 63,430.60 and 11,128.12

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Solution

The fourth proportional to 42,290.44, 63,430.60 and 11,128.12 is: 16,690.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,290.44 : 63,430.60 = 11,128.12 : x
  2. Step 2: Convert to fraction form
    42,290.44/63,430.60 = 11,128.12/x
  3. Step 3: Cross multiply
    42,290.44x = 63,430.60 × 11,128.12
  4. Step 4: Simplify right side
    42,290.44x = 705,863,328.47
  5. Step 5: Solve for x
    x = 705,863,328.47/42,290.44
  6. Step 6: Final answer
    x = 16,690.85

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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.