Home / 18,818.13-25,970.25-10,860.90

Finding the Fourth Proportional to 18,818.13, 25,970.25 and 10,860.90

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Solution

The fourth proportional to 18,818.13, 25,970.25 and 10,860.90 is: 14,988.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.13 : 25,970.25 = 10,860.90 : x
  2. Step 2: Convert to fraction form
    18,818.13/25,970.25 = 10,860.90/x
  3. Step 3: Cross multiply
    18,818.13x = 25,970.25 × 10,860.90
  4. Step 4: Simplify right side
    18,818.13x = 282,060,288.23
  5. Step 5: Solve for x
    x = 282,060,288.23/18,818.13
  6. Step 6: Final answer
    x = 14,988.75

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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.