Home / 28,677.26-39,575.16-15,931.64

Finding the Fourth Proportional to 28,677.26, 39,575.16 and 15,931.64

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Solution

The fourth proportional to 28,677.26, 39,575.16 and 15,931.64 is: 21,985.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,677.26 : 39,575.16 = 15,931.64 : x
  2. Step 2: Convert to fraction form
    28,677.26/39,575.16 = 15,931.64/x
  3. Step 3: Cross multiply
    28,677.26x = 39,575.16 × 15,931.64
  4. Step 4: Simplify right side
    28,677.26x = 630,497,301.00
  5. Step 5: Solve for x
    x = 630,497,301.00/28,677.26
  6. Step 6: Final answer
    x = 21,985.97

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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.