Home / 21,776.48-30,040.68-16,987.76

Finding the Fourth Proportional to 21,776.48, 30,040.68 and 16,987.76

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Solution

The fourth proportional to 21,776.48, 30,040.68 and 16,987.76 is: 23,434.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.48 : 30,040.68 = 16,987.76 : x
  2. Step 2: Convert to fraction form
    21,776.48/30,040.68 = 16,987.76/x
  3. Step 3: Cross multiply
    21,776.48x = 30,040.68 × 16,987.76
  4. Step 4: Simplify right side
    21,776.48x = 510,323,862.08
  5. Step 5: Solve for x
    x = 510,323,862.08/21,776.48
  6. Step 6: Final answer
    x = 23,434.64

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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.