Home / 15,088.26-20,822.84-9,120.18

Finding the Fourth Proportional to 15,088.26, 20,822.84 and 9,120.18

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Solution

The fourth proportional to 15,088.26, 20,822.84 and 9,120.18 is: 12,586.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.26 : 20,822.84 = 9,120.18 : x
  2. Step 2: Convert to fraction form
    15,088.26/20,822.84 = 9,120.18/x
  3. Step 3: Cross multiply
    15,088.26x = 20,822.84 × 9,120.18
  4. Step 4: Simplify right side
    15,088.26x = 189,908,048.91
  5. Step 5: Solve for x
    x = 189,908,048.91/15,088.26
  6. Step 6: Final answer
    x = 12,586.48

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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.