Home / 20,281.77-27,987.48-15,504.93

Finding the Fourth Proportional to 20,281.77, 27,987.48 and 15,504.93

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Solution

The fourth proportional to 20,281.77, 27,987.48 and 15,504.93 is: 21,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.77 : 27,987.48 = 15,504.93 : x
  2. Step 2: Convert to fraction form
    20,281.77/27,987.48 = 15,504.93/x
  3. Step 3: Cross multiply
    20,281.77x = 27,987.48 × 15,504.93
  4. Step 4: Simplify right side
    20,281.77x = 433,943,918.28
  5. Step 5: Solve for x
    x = 433,943,918.28/20,281.77
  6. Step 6: Final answer
    x = 21,395.76

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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.