Home / 18,637.29-25,719.86-10,139.99

Finding the Fourth Proportional to 18,637.29, 25,719.86 and 10,139.99

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Solution

The fourth proportional to 18,637.29, 25,719.86 and 10,139.99 is: 13,993.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.29 : 25,719.86 = 10,139.99 : x
  2. Step 2: Convert to fraction form
    18,637.29/25,719.86 = 10,139.99/x
  3. Step 3: Cross multiply
    18,637.29x = 25,719.86 × 10,139.99
  4. Step 4: Simplify right side
    18,637.29x = 260,799,019.95
  5. Step 5: Solve for x
    x = 260,799,019.95/18,637.29
  6. Step 6: Final answer
    x = 13,993.40

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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.