Home / 15,329.48-21,156.96-9,364.61

Finding the Fourth Proportional to 15,329.48, 21,156.96 and 9,364.61

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Solution

The fourth proportional to 15,329.48, 21,156.96 and 9,364.61 is: 12,924.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.48 : 21,156.96 = 9,364.61 : x
  2. Step 2: Convert to fraction form
    15,329.48/21,156.96 = 9,364.61/x
  3. Step 3: Cross multiply
    15,329.48x = 21,156.96 × 9,364.61
  4. Step 4: Simplify right side
    15,329.48x = 198,126,679.19
  5. Step 5: Solve for x
    x = 198,126,679.19/15,329.48
  6. Step 6: Final answer
    x = 12,924.55

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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.