Home / 20,365.20-30,547.80-15,444.45

Finding the Fourth Proportional to 20,365.20, 30,547.80 and 15,444.45

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Solution

The fourth proportional to 20,365.20, 30,547.80 and 15,444.45 is: 23,166.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.20 : 30,547.80 = 15,444.45 : x
  2. Step 2: Convert to fraction form
    20,365.20/30,547.80 = 15,444.45/x
  3. Step 3: Cross multiply
    20,365.20x = 30,547.80 × 15,444.45
  4. Step 4: Simplify right side
    20,365.20x = 471,793,969.71
  5. Step 5: Solve for x
    x = 471,793,969.71/20,365.20
  6. Step 6: Final answer
    x = 23,166.68

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.