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Finding the Fourth Proportional to 18,113.34, 24,970.20 and 12,719.40

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Solution

The fourth proportional to 18,113.34, 24,970.20 and 12,719.40 is: 17,534.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.34 : 24,970.20 = 12,719.40 : x
  2. Step 2: Convert to fraction form
    18,113.34/24,970.20 = 12,719.40/x
  3. Step 3: Cross multiply
    18,113.34x = 24,970.20 × 12,719.40
  4. Step 4: Simplify right side
    18,113.34x = 317,605,961.88
  5. Step 5: Solve for x
    x = 317,605,961.88/18,113.34
  6. Step 6: Final answer
    x = 17,534.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.