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Finding the Fourth Proportional to 18,820.60, 25,972.42 and 10,437.10

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Solution

The fourth proportional to 18,820.60, 25,972.42 and 10,437.10 is: 14,403.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.60 : 25,972.42 = 10,437.10 : x
  2. Step 2: Convert to fraction form
    18,820.60/25,972.42 = 10,437.10/x
  3. Step 3: Cross multiply
    18,820.60x = 25,972.42 × 10,437.10
  4. Step 4: Simplify right side
    18,820.60x = 271,076,653.76
  5. Step 5: Solve for x
    x = 271,076,653.76/18,820.60
  6. Step 6: Final answer
    x = 14,403.19

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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.