Home / 20,988.63-31,482.92-14,394.83

Finding the Fourth Proportional to 20,988.63, 31,482.92 and 14,394.83

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Solution

The fourth proportional to 20,988.63, 31,482.92 and 14,394.83 is: 21,592.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.63 : 31,482.92 = 14,394.83 : x
  2. Step 2: Convert to fraction form
    20,988.63/31,482.92 = 14,394.83/x
  3. Step 3: Cross multiply
    20,988.63x = 31,482.92 × 14,394.83
  4. Step 4: Simplify right side
    20,988.63x = 453,191,169.98
  5. Step 5: Solve for x
    x = 453,191,169.98/20,988.63
  6. Step 6: Final answer
    x = 21,592.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.