Home / 12,290,428.80-18,435,643.20-8,464,053.60

Finding the Fourth Proportional to 12,290,428.80, 18,435,643.20 and 8,464,053.60

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Solution

The fourth proportional to 12,290,428.80, 18,435,643.20 and 8,464,053.60 is: 12,696,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290,428.80 : 18,435,643.20 = 8,464,053.60 : x
  2. Step 2: Convert to fraction form
    12,290,428.80/18,435,643.20 = 8,464,053.60/x
  3. Step 3: Cross multiply
    12,290,428.80x = 18,435,643.20 × 8,464,053.60
  4. Step 4: Simplify right side
    12,290,428.80x = 156,040,272,195,275.50
  5. Step 5: Solve for x
    x = 156,040,272,195,275.50/12,290,428.80
  6. Step 6: Final answer
    x = 12,696,080.40

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Similar ratio
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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.