Home / 20,345.98-28,080.12-11,848.25

Finding the Fourth Proportional to 20,345.98, 28,080.12 and 11,848.25

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Solution

The fourth proportional to 20,345.98, 28,080.12 and 11,848.25 is: 16,352.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.98 : 28,080.12 = 11,848.25 : x
  2. Step 2: Convert to fraction form
    20,345.98/28,080.12 = 11,848.25/x
  3. Step 3: Cross multiply
    20,345.98x = 28,080.12 × 11,848.25
  4. Step 4: Simplify right side
    20,345.98x = 332,700,281.79
  5. Step 5: Solve for x
    x = 332,700,281.79/20,345.98
  6. Step 6: Final answer
    x = 16,352.14

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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.