Home / 13,655,980.80-20,491,844.40-5,142,427.20

Finding the Fourth Proportional to 13,655,980.80, 20,491,844.40 and 5,142,427.20

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Solution

The fourth proportional to 13,655,980.80, 20,491,844.40 and 5,142,427.20 is: 7,716,605.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655,980.80 : 20,491,844.40 = 5,142,427.20 : x
  2. Step 2: Convert to fraction form
    13,655,980.80/20,491,844.40 = 5,142,427.20/x
  3. Step 3: Cross multiply
    13,655,980.80x = 20,491,844.40 × 5,142,427.20
  4. Step 4: Simplify right side
    13,655,980.80x = 105,377,818,020,727.67
  5. Step 5: Solve for x
    x = 105,377,818,020,727.67/13,655,980.80
  6. Step 6: Final answer
    x = 7,716,605.61

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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.