Home / 20,281.03-27,987.51-11,328.66

Finding the Fourth Proportional to 20,281.03, 27,987.51 and 11,328.66

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Solution

The fourth proportional to 20,281.03, 27,987.51 and 11,328.66 is: 15,633.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.03 : 27,987.51 = 11,328.66 : x
  2. Step 2: Convert to fraction form
    20,281.03/27,987.51 = 11,328.66/x
  3. Step 3: Cross multiply
    20,281.03x = 27,987.51 × 11,328.66
  4. Step 4: Simplify right side
    20,281.03x = 317,060,985.04
  5. Step 5: Solve for x
    x = 317,060,985.04/20,281.03
  6. Step 6: Final answer
    x = 15,633.38

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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.