Home / 28,087.50-42,143.55-13,306.98

Finding the Fourth Proportional to 28,087.50, 42,143.55 and 13,306.98

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Solution

The fourth proportional to 28,087.50, 42,143.55 and 13,306.98 is: 19,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.50 : 42,143.55 = 13,306.98 : x
  2. Step 2: Convert to fraction form
    28,087.50/42,143.55 = 13,306.98/x
  3. Step 3: Cross multiply
    28,087.50x = 42,143.55 × 13,306.98
  4. Step 4: Simplify right side
    28,087.50x = 560,803,376.98
  5. Step 5: Solve for x
    x = 560,803,376.98/28,087.50
  6. Step 6: Final answer
    x = 19,966.30

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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.