Home / 18,142,129.80-27,175,869.90-9,171,736.20

Finding the Fourth Proportional to 18,142,129.80, 27,175,869.90 and 9,171,736.20

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Solution

The fourth proportional to 18,142,129.80, 27,175,869.90 and 9,171,736.20 is: 13,738,734.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,142,129.80 : 27,175,869.90 = 9,171,736.20 : x
  2. Step 2: Convert to fraction form
    18,142,129.80/27,175,869.90 = 9,171,736.20/x
  3. Step 3: Cross multiply
    18,142,129.80x = 27,175,869.90 × 9,171,736.20
  4. Step 4: Simplify right side
    18,142,129.80x = 249,249,909,728,320.34
  5. Step 5: Solve for x
    x = 249,249,909,728,320.34/18,142,129.80
  6. Step 6: Final answer
    x = 13,738,734.78

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1.5x scale

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.