Home / 39,416.88-54,395.10-21,511.74

Finding the Fourth Proportional to 39,416.88, 54,395.10 and 21,511.74

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Solution

The fourth proportional to 39,416.88, 54,395.10 and 21,511.74 is: 29,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,416.88 : 54,395.10 = 21,511.74 : x
  2. Step 2: Convert to fraction form
    39,416.88/54,395.10 = 21,511.74/x
  3. Step 3: Cross multiply
    39,416.88x = 54,395.10 × 21,511.74
  4. Step 4: Simplify right side
    39,416.88x = 1,170,133,248.47
  5. Step 5: Solve for x
    x = 1,170,133,248.47/39,416.88
  6. Step 6: Final answer
    x = 29,686.10

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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.