Home / 20,886.08-28,823.16-11,454.56

Finding the Fourth Proportional to 20,886.08, 28,823.16 and 11,454.56

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Solution

The fourth proportional to 20,886.08, 28,823.16 and 11,454.56 is: 15,807.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.08 : 28,823.16 = 11,454.56 : x
  2. Step 2: Convert to fraction form
    20,886.08/28,823.16 = 11,454.56/x
  3. Step 3: Cross multiply
    20,886.08x = 28,823.16 × 11,454.56
  4. Step 4: Simplify right side
    20,886.08x = 330,156,615.61
  5. Step 5: Solve for x
    x = 330,156,615.61/20,886.08
  6. Step 6: Final answer
    x = 15,807.50

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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.