Home / 28,151.79-42,169.19-13,372.35

Finding the Fourth Proportional to 28,151.79, 42,169.19 and 13,372.35

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Solution

The fourth proportional to 28,151.79, 42,169.19 and 13,372.35 is: 20,030.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,151.79 : 42,169.19 = 13,372.35 : x
  2. Step 2: Convert to fraction form
    28,151.79/42,169.19 = 13,372.35/x
  3. Step 3: Cross multiply
    28,151.79x = 42,169.19 × 13,372.35
  4. Step 4: Simplify right side
    28,151.79x = 563,901,101.03
  5. Step 5: Solve for x
    x = 563,901,101.03/28,151.79
  6. Step 6: Final answer
    x = 20,030.74

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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.