Home / 20,682.78-31,036.92-9,587.40

Finding the Fourth Proportional to 20,682.78, 31,036.92 and 9,587.40

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Solution

The fourth proportional to 20,682.78, 31,036.92 and 9,587.40 is: 14,387.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.78 : 31,036.92 = 9,587.40 : x
  2. Step 2: Convert to fraction form
    20,682.78/31,036.92 = 9,587.40/x
  3. Step 3: Cross multiply
    20,682.78x = 31,036.92 × 9,587.40
  4. Step 4: Simplify right side
    20,682.78x = 297,563,366.81
  5. Step 5: Solve for x
    x = 297,563,366.81/20,682.78
  6. Step 6: Final answer
    x = 14,387.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.