Home / 20,209,615.60-30,314,423.40-7,428,459.55

Finding the Fourth Proportional to 20,209,615.60, 30,314,423.40 and 7,428,459.55

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Solution

The fourth proportional to 20,209,615.60, 30,314,423.40 and 7,428,459.55 is: 11,142,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209,615.60 : 30,314,423.40 = 7,428,459.55 : x
  2. Step 2: Convert to fraction form
    20,209,615.60/30,314,423.40 = 7,428,459.55/x
  3. Step 3: Cross multiply
    20,209,615.60x = 30,314,423.40 × 7,428,459.55
  4. Step 4: Simplify right side
    20,209,615.60x = 225,189,468,008,473.47
  5. Step 5: Solve for x
    x = 225,189,468,008,473.47/20,209,615.60
  6. Step 6: Final answer
    x = 11,142,689.33

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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.