Home / 15,826.80-21,842.01-9,114.60

Finding the Fourth Proportional to 15,826.80, 21,842.01 and 9,114.60

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Solution

The fourth proportional to 15,826.80, 21,842.01 and 9,114.60 is: 12,578.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,826.80 : 21,842.01 = 9,114.60 : x
  2. Step 2: Convert to fraction form
    15,826.80/21,842.01 = 9,114.60/x
  3. Step 3: Cross multiply
    15,826.80x = 21,842.01 × 9,114.60
  4. Step 4: Simplify right side
    15,826.80x = 199,081,184.35
  5. Step 5: Solve for x
    x = 199,081,184.35/15,826.80
  6. Step 6: Final answer
    x = 12,578.74

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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.