Home / 18,718.40-25,830.29-10,218.84

Finding the Fourth Proportional to 18,718.40, 25,830.29 and 10,218.84

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Solution

The fourth proportional to 18,718.40, 25,830.29 and 10,218.84 is: 14,101.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.40 : 25,830.29 = 10,218.84 : x
  2. Step 2: Convert to fraction form
    18,718.40/25,830.29 = 10,218.84/x
  3. Step 3: Cross multiply
    18,718.40x = 25,830.29 × 10,218.84
  4. Step 4: Simplify right side
    18,718.40x = 263,955,549.57
  5. Step 5: Solve for x
    x = 263,955,549.57/18,718.40
  6. Step 6: Final answer
    x = 14,101.40

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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.