Home / 20,622.92-28,459.65-11,191.48

Finding the Fourth Proportional to 20,622.92, 28,459.65 and 11,191.48

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Solution

The fourth proportional to 20,622.92, 28,459.65 and 11,191.48 is: 15,444.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.92 : 28,459.65 = 11,191.48 : x
  2. Step 2: Convert to fraction form
    20,622.92/28,459.65 = 11,191.48/x
  3. Step 3: Cross multiply
    20,622.92x = 28,459.65 × 11,191.48
  4. Step 4: Simplify right side
    20,622.92x = 318,505,547.82
  5. Step 5: Solve for x
    x = 318,505,547.82/20,622.92
  6. Step 6: Final answer
    x = 15,444.25

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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.