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Finding the Fourth Proportional to 18,422.34, 25,423.02 and 10,038.84

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Solution

The fourth proportional to 18,422.34, 25,423.02 and 10,038.84 is: 13,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.34 : 25,423.02 = 10,038.84 : x
  2. Step 2: Convert to fraction form
    18,422.34/25,423.02 = 10,038.84/x
  3. Step 3: Cross multiply
    18,422.34x = 25,423.02 × 10,038.84
  4. Step 4: Simplify right side
    18,422.34x = 255,217,630.10
  5. Step 5: Solve for x
    x = 255,217,630.10/18,422.34
  6. Step 6: Final answer
    x = 13,853.70

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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.