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Finding the Fourth Proportional to 30,609.20, 45,913.80 and 10,888.40

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Solution

The fourth proportional to 30,609.20, 45,913.80 and 10,888.40 is: 16,332.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,609.20 : 45,913.80 = 10,888.40 : x
  2. Step 2: Convert to fraction form
    30,609.20/45,913.80 = 10,888.40/x
  3. Step 3: Cross multiply
    30,609.20x = 45,913.80 × 10,888.40
  4. Step 4: Simplify right side
    30,609.20x = 499,927,819.92
  5. Step 5: Solve for x
    x = 499,927,819.92/30,609.20
  6. Step 6: Final answer
    x = 16,332.60

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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.