Home / 18,643.23-25,727.76-10,686.20

Finding the Fourth Proportional to 18,643.23, 25,727.76 and 10,686.20

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Solution

The fourth proportional to 18,643.23, 25,727.76 and 10,686.20 is: 14,747.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.23 : 25,727.76 = 10,686.20 : x
  2. Step 2: Convert to fraction form
    18,643.23/25,727.76 = 10,686.20/x
  3. Step 3: Cross multiply
    18,643.23x = 25,727.76 × 10,686.20
  4. Step 4: Simplify right side
    18,643.23x = 274,931,860.27
  5. Step 5: Solve for x
    x = 274,931,860.27/18,643.23
  6. Step 6: Final answer
    x = 14,747.01

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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.