Home / 21,006.76-28,969.85-15,332.52

Finding the Fourth Proportional to 21,006.76, 28,969.85 and 15,332.52

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Solution

The fourth proportional to 21,006.76, 28,969.85 and 15,332.52 is: 21,144.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.76 : 28,969.85 = 15,332.52 : x
  2. Step 2: Convert to fraction form
    21,006.76/28,969.85 = 15,332.52/x
  3. Step 3: Cross multiply
    21,006.76x = 28,969.85 × 15,332.52
  4. Step 4: Simplify right side
    21,006.76x = 444,180,842.85
  5. Step 5: Solve for x
    x = 444,180,842.85/21,006.76
  6. Step 6: Final answer
    x = 21,144.66

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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.