Home / 14,888.30-20,539.28-9,221.54

Finding the Fourth Proportional to 14,888.30, 20,539.28 and 9,221.54

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Solution

The fourth proportional to 14,888.30, 20,539.28 and 9,221.54 is: 12,721.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,888.30 : 20,539.28 = 9,221.54 : x
  2. Step 2: Convert to fraction form
    14,888.30/20,539.28 = 9,221.54/x
  3. Step 3: Cross multiply
    14,888.30x = 20,539.28 × 9,221.54
  4. Step 4: Simplify right side
    14,888.30x = 189,403,792.09
  5. Step 5: Solve for x
    x = 189,403,792.09/14,888.30
  6. Step 6: Final answer
    x = 12,721.65

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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.