Home / 12,315,374.28-16,995,689.28-8,178,253.20

Finding the Fourth Proportional to 12,315,374.28, 16,995,689.28 and 8,178,253.20

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Solution

The fourth proportional to 12,315,374.28, 16,995,689.28 and 8,178,253.20 is: 11,286,303.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315,374.28 : 16,995,689.28 = 8,178,253.20 : x
  2. Step 2: Convert to fraction form
    12,315,374.28/16,995,689.28 = 8,178,253.20/x
  3. Step 3: Cross multiply
    12,315,374.28x = 16,995,689.28 × 8,178,253.20
  4. Step 4: Simplify right side
    12,315,374.28x = 138,995,050,240,365.70
  5. Step 5: Solve for x
    x = 138,995,050,240,365.70/12,315,374.28
  6. Step 6: Final answer
    x = 11,286,303.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.