Home / 20,339.45-28,068.83-11,386.95

Finding the Fourth Proportional to 20,339.45, 28,068.83 and 11,386.95

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Solution

The fourth proportional to 20,339.45, 28,068.83 and 11,386.95 is: 15,714.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.45 : 28,068.83 = 11,386.95 : x
  2. Step 2: Convert to fraction form
    20,339.45/28,068.83 = 11,386.95/x
  3. Step 3: Cross multiply
    20,339.45x = 28,068.83 × 11,386.95
  4. Step 4: Simplify right side
    20,339.45x = 319,618,363.77
  5. Step 5: Solve for x
    x = 319,618,363.77/20,339.45
  6. Step 6: Final answer
    x = 15,714.21

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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.