Home / 28,484.48-39,308.64-15,909.68

Finding the Fourth Proportional to 28,484.48, 39,308.64 and 15,909.68

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Solution

The fourth proportional to 28,484.48, 39,308.64 and 15,909.68 is: 21,955.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,484.48 : 39,308.64 = 15,909.68 : x
  2. Step 2: Convert to fraction form
    28,484.48/39,308.64 = 15,909.68/x
  3. Step 3: Cross multiply
    28,484.48x = 39,308.64 × 15,909.68
  4. Step 4: Simplify right side
    28,484.48x = 625,387,883.64
  5. Step 5: Solve for x
    x = 625,387,883.64/28,484.48
  6. Step 6: Final answer
    x = 21,955.39

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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.