Home / 12,454,587.20-18,681,880.80-7,415,739.20

Finding the Fourth Proportional to 12,454,587.20, 18,681,880.80 and 7,415,739.20

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Solution

The fourth proportional to 12,454,587.20, 18,681,880.80 and 7,415,739.20 is: 11,123,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,454,587.20 : 18,681,880.80 = 7,415,739.20 : x
  2. Step 2: Convert to fraction form
    12,454,587.20/18,681,880.80 = 7,415,739.20/x
  3. Step 3: Cross multiply
    12,454,587.20x = 18,681,880.80 × 7,415,739.20
  4. Step 4: Simplify right side
    12,454,587.20x = 138,539,955,778,287.38
  5. Step 5: Solve for x
    x = 138,539,955,778,287.38/12,454,587.20
  6. Step 6: Final answer
    x = 11,123,608.80

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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.