Home / 27,995.55-38,633.84-15,420.30

Finding the Fourth Proportional to 27,995.55, 38,633.84 and 15,420.30

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Solution

The fourth proportional to 27,995.55, 38,633.84 and 15,420.30 is: 21,280.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,995.55 : 38,633.84 = 15,420.30 : x
  2. Step 2: Convert to fraction form
    27,995.55/38,633.84 = 15,420.30/x
  3. Step 3: Cross multiply
    27,995.55x = 38,633.84 × 15,420.30
  4. Step 4: Simplify right side
    27,995.55x = 595,745,209.78
  5. Step 5: Solve for x
    x = 595,745,209.78/27,995.55
  6. Step 6: Final answer
    x = 21,280.00

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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.