Home / 20,631.98-28,443.05-14,661.47

Finding the Fourth Proportional to 20,631.98, 28,443.05 and 14,661.47

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Solution

The fourth proportional to 20,631.98, 28,443.05 and 14,661.47 is: 20,212.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.98 : 28,443.05 = 14,661.47 : x
  2. Step 2: Convert to fraction form
    20,631.98/28,443.05 = 14,661.47/x
  3. Step 3: Cross multiply
    20,631.98x = 28,443.05 × 14,661.47
  4. Step 4: Simplify right side
    20,631.98x = 417,016,977.06
  5. Step 5: Solve for x
    x = 417,016,977.06/20,631.98
  6. Step 6: Final answer
    x = 20,212.16

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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.