Home / 20,886.07-28,822.81-11,454.70

Finding the Fourth Proportional to 20,886.07, 28,822.81 and 11,454.70

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Solution

The fourth proportional to 20,886.07, 28,822.81 and 11,454.70 is: 15,807.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.07 : 28,822.81 = 11,454.70 : x
  2. Step 2: Convert to fraction form
    20,886.07/28,822.81 = 11,454.70/x
  3. Step 3: Cross multiply
    20,886.07x = 28,822.81 × 11,454.70
  4. Step 4: Simplify right side
    20,886.07x = 330,156,641.71
  5. Step 5: Solve for x
    x = 330,156,641.71/20,886.07
  6. Step 6: Final answer
    x = 15,807.50

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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.