Home / 28,135.96-38,827.15-15,560.71

Finding the Fourth Proportional to 28,135.96, 38,827.15 and 15,560.71

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Solution

The fourth proportional to 28,135.96, 38,827.15 and 15,560.71 is: 21,473.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,135.96 : 38,827.15 = 15,560.71 : x
  2. Step 2: Convert to fraction form
    28,135.96/38,827.15 = 15,560.71/x
  3. Step 3: Cross multiply
    28,135.96x = 38,827.15 × 15,560.71
  4. Step 4: Simplify right side
    28,135.96x = 604,178,021.28
  5. Step 5: Solve for x
    x = 604,178,021.28/28,135.96
  6. Step 6: Final answer
    x = 21,473.52

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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.