Home / 20,298.87-28,009.49-11,345.49

Finding the Fourth Proportional to 20,298.87, 28,009.49 and 11,345.49

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Solution

The fourth proportional to 20,298.87, 28,009.49 and 11,345.49 is: 15,655.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.87 : 28,009.49 = 11,345.49 : x
  2. Step 2: Convert to fraction form
    20,298.87/28,009.49 = 11,345.49/x
  3. Step 3: Cross multiply
    20,298.87x = 28,009.49 × 11,345.49
  4. Step 4: Simplify right side
    20,298.87x = 317,781,331.97
  5. Step 5: Solve for x
    x = 317,781,331.97/20,298.87
  6. Step 6: Final answer
    x = 15,655.12

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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.