Home / 14,248.40-21,329.40-12,693.20

Finding the Fourth Proportional to 14,248.40, 21,329.40 and 12,693.20

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Solution

The fourth proportional to 14,248.40, 21,329.40 and 12,693.20 is: 19,001.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,248.40 : 21,329.40 = 12,693.20 : x
  2. Step 2: Convert to fraction form
    14,248.40/21,329.40 = 12,693.20/x
  3. Step 3: Cross multiply
    14,248.40x = 21,329.40 × 12,693.20
  4. Step 4: Simplify right side
    14,248.40x = 270,738,340.08
  5. Step 5: Solve for x
    x = 270,738,340.08/14,248.40
  6. Step 6: Final answer
    x = 19,001.32

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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.