Home / 12,487,929.20-18,727,228.20-8,690,130.80

Finding the Fourth Proportional to 12,487,929.20, 18,727,228.20 and 8,690,130.80

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Solution

The fourth proportional to 12,487,929.20, 18,727,228.20 and 8,690,130.80 is: 13,031,949.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487,929.20 : 18,727,228.20 = 8,690,130.80 : x
  2. Step 2: Convert to fraction form
    12,487,929.20/18,727,228.20 = 8,690,130.80/x
  3. Step 3: Cross multiply
    12,487,929.20x = 18,727,228.20 × 8,690,130.80
  4. Step 4: Simplify right side
    12,487,929.20x = 162,742,062,579,448.56
  5. Step 5: Solve for x
    x = 162,742,062,579,448.56/12,487,929.20
  6. Step 6: Final answer
    x = 13,031,949.49

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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.