Home / 28,149.95-42,220.06-13,158.43

Finding the Fourth Proportional to 28,149.95, 42,220.06 and 13,158.43

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Solution

The fourth proportional to 28,149.95, 42,220.06 and 13,158.43 is: 19,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.95 : 42,220.06 = 13,158.43 : x
  2. Step 2: Convert to fraction form
    28,149.95/42,220.06 = 13,158.43/x
  3. Step 3: Cross multiply
    28,149.95x = 42,220.06 × 13,158.43
  4. Step 4: Simplify right side
    28,149.95x = 555,549,493.01
  5. Step 5: Solve for x
    x = 555,549,493.01/28,149.95
  6. Step 6: Final answer
    x = 19,735.36

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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.