Home / 12,451,057.20-18,676,585.80-7,643,156.40

Finding the Fourth Proportional to 12,451,057.20, 18,676,585.80 and 7,643,156.40

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Solution

The fourth proportional to 12,451,057.20, 18,676,585.80 and 7,643,156.40 is: 11,464,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451,057.20 : 18,676,585.80 = 7,643,156.40 : x
  2. Step 2: Convert to fraction form
    12,451,057.20/18,676,585.80 = 7,643,156.40/x
  3. Step 3: Cross multiply
    12,451,057.20x = 18,676,585.80 × 7,643,156.40
  4. Step 4: Simplify right side
    12,451,057.20x = 142,748,066,287,419.12
  5. Step 5: Solve for x
    x = 142,748,066,287,419.12/12,451,057.20
  6. Step 6: Final answer
    x = 11,464,734.60

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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.