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Finding the Fourth Proportional to 10,404.80, 15,607.20 and 10,307.60

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Solution

The fourth proportional to 10,404.80, 15,607.20 and 10,307.60 is: 15,461.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,404.80 : 15,607.20 = 10,307.60 : x
  2. Step 2: Convert to fraction form
    10,404.80/15,607.20 = 10,307.60/x
  3. Step 3: Cross multiply
    10,404.80x = 15,607.20 × 10,307.60
  4. Step 4: Simplify right side
    10,404.80x = 160,872,774.72
  5. Step 5: Solve for x
    x = 160,872,774.72/10,404.80
  6. Step 6: Final answer
    x = 15,461.40

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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.