Home / 20,448.95-28,207.52-12,881.93

Finding the Fourth Proportional to 20,448.95, 28,207.52 and 12,881.93

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Solution

The fourth proportional to 20,448.95, 28,207.52 and 12,881.93 is: 17,769.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.95 : 28,207.52 = 12,881.93 : x
  2. Step 2: Convert to fraction form
    20,448.95/28,207.52 = 12,881.93/x
  3. Step 3: Cross multiply
    20,448.95x = 28,207.52 × 12,881.93
  4. Step 4: Simplify right side
    20,448.95x = 363,367,298.11
  5. Step 5: Solve for x
    x = 363,367,298.11/20,448.95
  6. Step 6: Final answer
    x = 17,769.48

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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.