Home / 28,278.18-42,352.67-13,497.50

Finding the Fourth Proportional to 28,278.18, 42,352.67 and 13,497.50

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Solution

The fourth proportional to 28,278.18, 42,352.67 and 13,497.50 is: 20,215.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.18 : 42,352.67 = 13,497.50 : x
  2. Step 2: Convert to fraction form
    28,278.18/42,352.67 = 13,497.50/x
  3. Step 3: Cross multiply
    28,278.18x = 42,352.67 × 13,497.50
  4. Step 4: Simplify right side
    28,278.18x = 571,655,302.95
  5. Step 5: Solve for x
    x = 571,655,302.95/28,278.18
  6. Step 6: Final answer
    x = 20,215.42

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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.