Home / 27,985.77-38,620.13-15,410.25

Finding the Fourth Proportional to 27,985.77, 38,620.13 and 15,410.25

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Solution

The fourth proportional to 27,985.77, 38,620.13 and 15,410.25 is: 21,266.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.77 : 38,620.13 = 15,410.25 : x
  2. Step 2: Convert to fraction form
    27,985.77/38,620.13 = 15,410.25/x
  3. Step 3: Cross multiply
    27,985.77x = 38,620.13 × 15,410.25
  4. Step 4: Simplify right side
    27,985.77x = 595,145,781.28
  5. Step 5: Solve for x
    x = 595,145,781.28/27,985.77
  6. Step 6: Final answer
    x = 21,266.01

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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.