Home / 20,549.12-28,359.28-11,597.40

Finding the Fourth Proportional to 20,549.12, 28,359.28 and 11,597.40

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Solution

The fourth proportional to 20,549.12, 28,359.28 and 11,597.40 is: 16,005.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.12 : 28,359.28 = 11,597.40 : x
  2. Step 2: Convert to fraction form
    20,549.12/28,359.28 = 11,597.40/x
  3. Step 3: Cross multiply
    20,549.12x = 28,359.28 × 11,597.40
  4. Step 4: Simplify right side
    20,549.12x = 328,893,855.89
  5. Step 5: Solve for x
    x = 328,893,855.89/20,549.12
  6. Step 6: Final answer
    x = 16,005.26

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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.