Home / 20,810.04-28,717.70-11,378.44

Finding the Fourth Proportional to 20,810.04, 28,717.70 and 11,378.44

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Solution

The fourth proportional to 20,810.04, 28,717.70 and 11,378.44 is: 15,702.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.04 : 28,717.70 = 11,378.44 : x
  2. Step 2: Convert to fraction form
    20,810.04/28,717.70 = 11,378.44/x
  3. Step 3: Cross multiply
    20,810.04x = 28,717.70 × 11,378.44
  4. Step 4: Simplify right side
    20,810.04x = 326,762,626.39
  5. Step 5: Solve for x
    x = 326,762,626.39/20,810.04
  6. Step 6: Final answer
    x = 15,702.16

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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.