Home / 12,358,915.20-18,538,372.80-7,307,625.60

Finding the Fourth Proportional to 12,358,915.20, 18,538,372.80 and 7,307,625.60

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Solution

The fourth proportional to 12,358,915.20, 18,538,372.80 and 7,307,625.60 is: 10,961,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358,915.20 : 18,538,372.80 = 7,307,625.60 : x
  2. Step 2: Convert to fraction form
    12,358,915.20/18,538,372.80 = 7,307,625.60/x
  3. Step 3: Cross multiply
    12,358,915.20x = 18,538,372.80 × 7,307,625.60
  4. Step 4: Simplify right side
    12,358,915.20x = 135,471,487,655,623.67
  5. Step 5: Solve for x
    x = 135,471,487,655,623.67/12,358,915.20
  6. Step 6: Final answer
    x = 10,961,438.40

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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.