Home / 12,503,081.80-18,742,812.90-7,389,438.40

Finding the Fourth Proportional to 12,503,081.80, 18,742,812.90 and 7,389,438.40

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Solution

The fourth proportional to 12,503,081.80, 18,742,812.90 and 7,389,438.40 is: 11,077,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503,081.80 : 18,742,812.90 = 7,389,438.40 : x
  2. Step 2: Convert to fraction form
    12,503,081.80/18,742,812.90 = 7,389,438.40/x
  3. Step 3: Cross multiply
    12,503,081.80x = 18,742,812.90 × 7,389,438.40
  4. Step 4: Simplify right side
    12,503,081.80x = 138,498,861,367,275.36
  5. Step 5: Solve for x
    x = 138,498,861,367,275.36/12,503,081.80
  6. Step 6: Final answer
    x = 11,077,177.90

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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.