Home / 15,328.30-21,152.73-9,042.70

Finding the Fourth Proportional to 15,328.30, 21,152.73 and 9,042.70

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Solution

The fourth proportional to 15,328.30, 21,152.73 and 9,042.70 is: 12,478.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.30 : 21,152.73 = 9,042.70 : x
  2. Step 2: Convert to fraction form
    15,328.30/21,152.73 = 9,042.70/x
  3. Step 3: Cross multiply
    15,328.30x = 21,152.73 × 9,042.70
  4. Step 4: Simplify right side
    15,328.30x = 191,277,791.57
  5. Step 5: Solve for x
    x = 191,277,791.57/15,328.30
  6. Step 6: Final answer
    x = 12,478.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.