Home / 15,254.19-21,050.69-8,539.79

Finding the Fourth Proportional to 15,254.19, 21,050.69 and 8,539.79

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Solution

The fourth proportional to 15,254.19, 21,050.69 and 8,539.79 is: 11,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,254.19 : 21,050.69 = 8,539.79 : x
  2. Step 2: Convert to fraction form
    15,254.19/21,050.69 = 8,539.79/x
  3. Step 3: Cross multiply
    15,254.19x = 21,050.69 × 8,539.79
  4. Step 4: Simplify right side
    15,254.19x = 179,768,324.00
  5. Step 5: Solve for x
    x = 179,768,324.00/15,254.19
  6. Step 6: Final answer
    x = 11,784.85

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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.