Home / 18,637.50-25,718.57-10,139.54

Finding the Fourth Proportional to 18,637.50, 25,718.57 and 10,139.54

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Solution

The fourth proportional to 18,637.50, 25,718.57 and 10,139.54 is: 13,991.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.50 : 25,718.57 = 10,139.54 : x
  2. Step 2: Convert to fraction form
    18,637.50/25,718.57 = 10,139.54/x
  3. Step 3: Cross multiply
    18,637.50x = 25,718.57 × 10,139.54
  4. Step 4: Simplify right side
    18,637.50x = 260,774,469.26
  5. Step 5: Solve for x
    x = 260,774,469.26/18,637.50
  6. Step 6: Final answer
    x = 13,991.92

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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.