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Finding the Fourth Proportional to 18,347.83, 25,320.01 and 10,391.59

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Solution

The fourth proportional to 18,347.83, 25,320.01 and 10,391.59 is: 14,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.83 : 25,320.01 = 10,391.59 : x
  2. Step 2: Convert to fraction form
    18,347.83/25,320.01 = 10,391.59/x
  3. Step 3: Cross multiply
    18,347.83x = 25,320.01 × 10,391.59
  4. Step 4: Simplify right side
    18,347.83x = 263,115,200.04
  5. Step 5: Solve for x
    x = 263,115,200.04/18,347.83
  6. Step 6: Final answer
    x = 14,340.40

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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.