Home / 19,870.16-27,419.46-11,908.40

Finding the Fourth Proportional to 19,870.16, 27,419.46 and 11,908.40

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Solution

The fourth proportional to 19,870.16, 27,419.46 and 11,908.40 is: 16,432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.16 : 27,419.46 = 11,908.40 : x
  2. Step 2: Convert to fraction form
    19,870.16/27,419.46 = 11,908.40/x
  3. Step 3: Cross multiply
    19,870.16x = 27,419.46 × 11,908.40
  4. Step 4: Simplify right side
    19,870.16x = 326,521,897.46
  5. Step 5: Solve for x
    x = 326,521,897.46/19,870.16
  6. Step 6: Final answer
    x = 16,432.78

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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.