Home / 20,907.12-28,834.08-14,877.60

Finding the Fourth Proportional to 20,907.12, 28,834.08 and 14,877.60

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Solution

The fourth proportional to 20,907.12, 28,834.08 and 14,877.60 is: 20,518.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.12 : 28,834.08 = 14,877.60 : x
  2. Step 2: Convert to fraction form
    20,907.12/28,834.08 = 14,877.60/x
  3. Step 3: Cross multiply
    20,907.12x = 28,834.08 × 14,877.60
  4. Step 4: Simplify right side
    20,907.12x = 428,981,908.61
  5. Step 5: Solve for x
    x = 428,981,908.61/20,907.12
  6. Step 6: Final answer
    x = 20,518.46

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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.