Home / 20,798.19-28,701.50-11,366.75

Finding the Fourth Proportional to 20,798.19, 28,701.50 and 11,366.75

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Solution

The fourth proportional to 20,798.19, 28,701.50 and 11,366.75 is: 15,686.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.19 : 28,701.50 = 11,366.75 : x
  2. Step 2: Convert to fraction form
    20,798.19/28,701.50 = 11,366.75/x
  3. Step 3: Cross multiply
    20,798.19x = 28,701.50 × 11,366.75
  4. Step 4: Simplify right side
    20,798.19x = 326,242,875.30
  5. Step 5: Solve for x
    x = 326,242,875.30/20,798.19
  6. Step 6: Final answer
    x = 15,686.12

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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.