Home / 27,981.10-38,614.06-15,405.84

Finding the Fourth Proportional to 27,981.10, 38,614.06 and 15,405.84

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Solution

The fourth proportional to 27,981.10, 38,614.06 and 15,405.84 is: 21,260.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.10 : 38,614.06 = 15,405.84 : x
  2. Step 2: Convert to fraction form
    27,981.10/38,614.06 = 15,405.84/x
  3. Step 3: Cross multiply
    27,981.10x = 38,614.06 × 15,405.84
  4. Step 4: Simplify right side
    27,981.10x = 594,882,030.11
  5. Step 5: Solve for x
    x = 594,882,030.11/27,981.10
  6. Step 6: Final answer
    x = 21,260.14

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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.