Home / 15,478.40-23,217.60-7,702.40

Finding the Fourth Proportional to 15,478.40, 23,217.60 and 7,702.40

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Solution

The fourth proportional to 15,478.40, 23,217.60 and 7,702.40 is: 11,553.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.40 : 23,217.60 = 7,702.40 : x
  2. Step 2: Convert to fraction form
    15,478.40/23,217.60 = 7,702.40/x
  3. Step 3: Cross multiply
    15,478.40x = 23,217.60 × 7,702.40
  4. Step 4: Simplify right side
    15,478.40x = 178,831,242.24
  5. Step 5: Solve for x
    x = 178,831,242.24/15,478.40
  6. Step 6: Final answer
    x = 11,553.60

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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.