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Finding the Fourth Proportional to 18,530.40, 25,569.12 and 10,573.20

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Solution

The fourth proportional to 18,530.40, 25,569.12 and 10,573.20 is: 14,589.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.40 : 25,569.12 = 10,573.20 : x
  2. Step 2: Convert to fraction form
    18,530.40/25,569.12 = 10,573.20/x
  3. Step 3: Cross multiply
    18,530.40x = 25,569.12 × 10,573.20
  4. Step 4: Simplify right side
    18,530.40x = 270,347,419.58
  5. Step 5: Solve for x
    x = 270,347,419.58/18,530.40
  6. Step 6: Final answer
    x = 14,589.40

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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.