Home / 14,319.38-19,767.75-12,821.29

Finding the Fourth Proportional to 14,319.38, 19,767.75 and 12,821.29

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Solution

The fourth proportional to 14,319.38, 19,767.75 and 12,821.29 is: 17,699.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319.38 : 19,767.75 = 12,821.29 : x
  2. Step 2: Convert to fraction form
    14,319.38/19,767.75 = 12,821.29/x
  3. Step 3: Cross multiply
    14,319.38x = 19,767.75 × 12,821.29
  4. Step 4: Simplify right side
    14,319.38x = 253,447,957.90
  5. Step 5: Solve for x
    x = 253,447,957.90/14,319.38
  6. Step 6: Final answer
    x = 17,699.64

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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.