Home / 27,655.32-38,167.62-15,720.45

Finding the Fourth Proportional to 27,655.32, 38,167.62 and 15,720.45

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Solution

The fourth proportional to 27,655.32, 38,167.62 and 15,720.45 is: 21,696.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,655.32 : 38,167.62 = 15,720.45 : x
  2. Step 2: Convert to fraction form
    27,655.32/38,167.62 = 15,720.45/x
  3. Step 3: Cross multiply
    27,655.32x = 38,167.62 × 15,720.45
  4. Step 4: Simplify right side
    27,655.32x = 600,012,161.83
  5. Step 5: Solve for x
    x = 600,012,161.83/27,655.32
  6. Step 6: Final answer
    x = 21,696.08

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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.