Home / 20,657.04-28,506.89-11,225.60

Finding the Fourth Proportional to 20,657.04, 28,506.89 and 11,225.60

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Solution

The fourth proportional to 20,657.04, 28,506.89 and 11,225.60 is: 15,491.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.04 : 28,506.89 = 11,225.60 : x
  2. Step 2: Convert to fraction form
    20,657.04/28,506.89 = 11,225.60/x
  3. Step 3: Cross multiply
    20,657.04x = 28,506.89 × 11,225.60
  4. Step 4: Simplify right side
    20,657.04x = 320,006,972.45
  5. Step 5: Solve for x
    x = 320,006,972.45/20,657.04
  6. Step 6: Final answer
    x = 15,491.43

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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.