Home / 18,637.52-25,720.20-10,140.12

Finding the Fourth Proportional to 18,637.52, 25,720.20 and 10,140.12

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Solution

The fourth proportional to 18,637.52, 25,720.20 and 10,140.12 is: 13,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.52 : 25,720.20 = 10,140.12 : x
  2. Step 2: Convert to fraction form
    18,637.52/25,720.20 = 10,140.12/x
  3. Step 3: Cross multiply
    18,637.52x = 25,720.20 × 10,140.12
  4. Step 4: Simplify right side
    18,637.52x = 260,805,914.42
  5. Step 5: Solve for x
    x = 260,805,914.42/18,637.52
  6. Step 6: Final answer
    x = 13,993.60

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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.