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Finding the Fourth Proportional to 18,291.42, 25,242.03 and 10,335.20

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Solution

The fourth proportional to 18,291.42, 25,242.03 and 10,335.20 is: 14,262.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.42 : 25,242.03 = 10,335.20 : x
  2. Step 2: Convert to fraction form
    18,291.42/25,242.03 = 10,335.20/x
  3. Step 3: Cross multiply
    18,291.42x = 25,242.03 × 10,335.20
  4. Step 4: Simplify right side
    18,291.42x = 260,881,302.25
  5. Step 5: Solve for x
    x = 260,881,302.25/18,291.42
  6. Step 6: Final answer
    x = 14,262.50

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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.