Home / 28,612.52-42,920.70-9,894.38

Finding the Fourth Proportional to 28,612.52, 42,920.70 and 9,894.38

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Solution

The fourth proportional to 28,612.52, 42,920.70 and 9,894.38 is: 14,842.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,612.52 : 42,920.70 = 9,894.38 : x
  2. Step 2: Convert to fraction form
    28,612.52/42,920.70 = 9,894.38/x
  3. Step 3: Cross multiply
    28,612.52x = 42,920.70 × 9,894.38
  4. Step 4: Simplify right side
    28,612.52x = 424,673,715.67
  5. Step 5: Solve for x
    x = 424,673,715.67/28,612.52
  6. Step 6: Final answer
    x = 14,842.23

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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.