Home / 20,478.04-28,244.58-14,106.68

Finding the Fourth Proportional to 20,478.04, 28,244.58 and 14,106.68

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Solution

The fourth proportional to 20,478.04, 28,244.58 and 14,106.68 is: 19,456.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478.04 : 28,244.58 = 14,106.68 : x
  2. Step 2: Convert to fraction form
    20,478.04/28,244.58 = 14,106.68/x
  3. Step 3: Cross multiply
    20,478.04x = 28,244.58 × 14,106.68
  4. Step 4: Simplify right side
    20,478.04x = 398,437,251.79
  5. Step 5: Solve for x
    x = 398,437,251.79/20,478.04
  6. Step 6: Final answer
    x = 19,456.81

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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.