Home / 27,988.36-38,620.88-16,656.28

Finding the Fourth Proportional to 27,988.36, 38,620.88 and 16,656.28

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Solution

The fourth proportional to 27,988.36, 38,620.88 and 16,656.28 is: 22,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.36 : 38,620.88 = 16,656.28 : x
  2. Step 2: Convert to fraction form
    27,988.36/38,620.88 = 16,656.28/x
  3. Step 3: Cross multiply
    27,988.36x = 38,620.88 × 16,656.28
  4. Step 4: Simplify right side
    27,988.36x = 643,280,349.55
  5. Step 5: Solve for x
    x = 643,280,349.55/27,988.36
  6. Step 6: Final answer
    x = 22,983.85

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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.