Home / 20,480.34-28,248.14-14,443.01

Finding the Fourth Proportional to 20,480.34, 28,248.14 and 14,443.01

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Solution

The fourth proportional to 20,480.34, 28,248.14 and 14,443.01 is: 19,920.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.34 : 28,248.14 = 14,443.01 : x
  2. Step 2: Convert to fraction form
    20,480.34/28,248.14 = 14,443.01/x
  3. Step 3: Cross multiply
    20,480.34x = 28,248.14 × 14,443.01
  4. Step 4: Simplify right side
    20,480.34x = 407,988,169.30
  5. Step 5: Solve for x
    x = 407,988,169.30/20,480.34
  6. Step 6: Final answer
    x = 19,920.96

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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.