Home / 28,639.98-42,958.26-8,915.76

Finding the Fourth Proportional to 28,639.98, 42,958.26 and 8,915.76

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Solution

The fourth proportional to 28,639.98, 42,958.26 and 8,915.76 is: 13,373.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.98 : 42,958.26 = 8,915.76 : x
  2. Step 2: Convert to fraction form
    28,639.98/42,958.26 = 8,915.76/x
  3. Step 3: Cross multiply
    28,639.98x = 42,958.26 × 8,915.76
  4. Step 4: Simplify right side
    28,639.98x = 383,005,536.18
  5. Step 5: Solve for x
    x = 383,005,536.18/28,639.98
  6. Step 6: Final answer
    x = 13,373.11

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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.