Home / 21,364.47-29,441.33-15,384.85

Finding the Fourth Proportional to 21,364.47, 29,441.33 and 15,384.85

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Solution

The fourth proportional to 21,364.47, 29,441.33 and 15,384.85 is: 21,201.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,364.47 : 29,441.33 = 15,384.85 : x
  2. Step 2: Convert to fraction form
    21,364.47/29,441.33 = 15,384.85/x
  3. Step 3: Cross multiply
    21,364.47x = 29,441.33 × 15,384.85
  4. Step 4: Simplify right side
    21,364.47x = 452,950,445.85
  5. Step 5: Solve for x
    x = 452,950,445.85/21,364.47
  6. Step 6: Final answer
    x = 21,201.11

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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.