Home / 15,455.45-23,172.84-7,124.20

Finding the Fourth Proportional to 15,455.45, 23,172.84 and 7,124.20

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Solution

The fourth proportional to 15,455.45, 23,172.84 and 7,124.20 is: 10,681.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.45 : 23,172.84 = 7,124.20 : x
  2. Step 2: Convert to fraction form
    15,455.45/23,172.84 = 7,124.20/x
  3. Step 3: Cross multiply
    15,455.45x = 23,172.84 × 7,124.20
  4. Step 4: Simplify right side
    15,455.45x = 165,087,830.86
  5. Step 5: Solve for x
    x = 165,087,830.86/15,455.45
  6. Step 6: Final answer
    x = 10,681.53

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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.