Home / 28,167.70-42,263.63-13,387.06

Finding the Fourth Proportional to 28,167.70, 42,263.63 and 13,387.06

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Solution

The fourth proportional to 28,167.70, 42,263.63 and 13,387.06 is: 20,086.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167.70 : 42,263.63 = 13,387.06 : x
  2. Step 2: Convert to fraction form
    28,167.70/42,263.63 = 13,387.06/x
  3. Step 3: Cross multiply
    28,167.70x = 42,263.63 × 13,387.06
  4. Step 4: Simplify right side
    28,167.70x = 565,785,750.63
  5. Step 5: Solve for x
    x = 565,785,750.63/28,167.70
  6. Step 6: Final answer
    x = 20,086.33

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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.