Home / 18,687,643.20-28,031,464.80-7,328,462.40

Finding the Fourth Proportional to 18,687,643.20, 28,031,464.80 and 7,328,462.40

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Solution

The fourth proportional to 18,687,643.20, 28,031,464.80 and 7,328,462.40 is: 10,992,693.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,643.20 : 28,031,464.80 = 7,328,462.40 : x
  2. Step 2: Convert to fraction form
    18,687,643.20/28,031,464.80 = 7,328,462.40/x
  3. Step 3: Cross multiply
    18,687,643.20x = 28,031,464.80 × 7,328,462.40
  4. Step 4: Simplify right side
    18,687,643.20x = 205,427,535,803,723.53
  5. Step 5: Solve for x
    x = 205,427,535,803,723.53/18,687,643.20
  6. Step 6: Final answer
    x = 10,992,693.60

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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.