Home / 28,215.72-42,329.70-8,492.76

Finding the Fourth Proportional to 28,215.72, 42,329.70 and 8,492.76

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Solution

The fourth proportional to 28,215.72, 42,329.70 and 8,492.76 is: 12,740.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.72 : 42,329.70 = 8,492.76 : x
  2. Step 2: Convert to fraction form
    28,215.72/42,329.70 = 8,492.76/x
  3. Step 3: Cross multiply
    28,215.72x = 42,329.70 × 8,492.76
  4. Step 4: Simplify right side
    28,215.72x = 359,495,982.97
  5. Step 5: Solve for x
    x = 359,495,982.97/28,215.72
  6. Step 6: Final answer
    x = 12,740.98

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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.