Home / 27,655.16-38,164.77-15,718.39

Finding the Fourth Proportional to 27,655.16, 38,164.77 and 15,718.39

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Solution

The fourth proportional to 27,655.16, 38,164.77 and 15,718.39 is: 21,691.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,655.16 : 38,164.77 = 15,718.39 : x
  2. Step 2: Convert to fraction form
    27,655.16/38,164.77 = 15,718.39/x
  3. Step 3: Cross multiply
    27,655.16x = 38,164.77 × 15,718.39
  4. Step 4: Simplify right side
    27,655.16x = 599,888,643.71
  5. Step 5: Solve for x
    x = 599,888,643.71/27,655.16
  6. Step 6: Final answer
    x = 21,691.75

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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.