Home / 12,458,851.20-18,688,276.80-7,650,950.40

Finding the Fourth Proportional to 12,458,851.20, 18,688,276.80 and 7,650,950.40

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Solution

The fourth proportional to 12,458,851.20, 18,688,276.80 and 7,650,950.40 is: 11,476,425.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,851.20 : 18,688,276.80 = 7,650,950.40 : x
  2. Step 2: Convert to fraction form
    12,458,851.20/18,688,276.80 = 7,650,950.40/x
  3. Step 3: Cross multiply
    12,458,851.20x = 18,688,276.80 × 7,650,950.40
  4. Step 4: Simplify right side
    12,458,851.20x = 142,983,078,858,270.72
  5. Step 5: Solve for x
    x = 142,983,078,858,270.72/12,458,851.20
  6. Step 6: Final answer
    x = 11,476,425.60

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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.