Home / 27,981.02-38,614.25-15,405.77

Finding the Fourth Proportional to 27,981.02, 38,614.25 and 15,405.77

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Solution

The fourth proportional to 27,981.02, 38,614.25 and 15,405.77 is: 21,260.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.02 : 38,614.25 = 15,405.77 : x
  2. Step 2: Convert to fraction form
    27,981.02/38,614.25 = 15,405.77/x
  3. Step 3: Cross multiply
    27,981.02x = 38,614.25 × 15,405.77
  4. Step 4: Simplify right side
    27,981.02x = 594,882,254.22
  5. Step 5: Solve for x
    x = 594,882,254.22/27,981.02
  6. Step 6: Final answer
    x = 21,260.21

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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.