Home / 15,788.12-23,680.36-13,172.28

Finding the Fourth Proportional to 15,788.12, 23,680.36 and 13,172.28

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Solution

The fourth proportional to 15,788.12, 23,680.36 and 13,172.28 is: 19,756.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.12 : 23,680.36 = 13,172.28 : x
  2. Step 2: Convert to fraction form
    15,788.12/23,680.36 = 13,172.28/x
  3. Step 3: Cross multiply
    15,788.12x = 23,680.36 × 13,172.28
  4. Step 4: Simplify right side
    15,788.12x = 311,924,332.42
  5. Step 5: Solve for x
    x = 311,924,332.42/15,788.12
  6. Step 6: Final answer
    x = 19,756.90

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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.