Home / 27,721.08-38,254.74-15,145.80

Finding the Fourth Proportional to 27,721.08, 38,254.74 and 15,145.80

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Solution

The fourth proportional to 27,721.08, 38,254.74 and 15,145.80 is: 20,901.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,721.08 : 38,254.74 = 15,145.80 : x
  2. Step 2: Convert to fraction form
    27,721.08/38,254.74 = 15,145.80/x
  3. Step 3: Cross multiply
    27,721.08x = 38,254.74 × 15,145.80
  4. Step 4: Simplify right side
    27,721.08x = 579,398,641.09
  5. Step 5: Solve for x
    x = 579,398,641.09/27,721.08
  6. Step 6: Final answer
    x = 20,901.01

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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.