Home / 28,559.20-42,838.80-15,437.20

Finding the Fourth Proportional to 28,559.20, 42,838.80 and 15,437.20

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Solution

The fourth proportional to 28,559.20, 42,838.80 and 15,437.20 is: 23,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.20 : 42,838.80 = 15,437.20 : x
  2. Step 2: Convert to fraction form
    28,559.20/42,838.80 = 15,437.20/x
  3. Step 3: Cross multiply
    28,559.20x = 42,838.80 × 15,437.20
  4. Step 4: Simplify right side
    28,559.20x = 661,311,123.36
  5. Step 5: Solve for x
    x = 661,311,123.36/28,559.20
  6. Step 6: Final answer
    x = 23,155.80

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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.