Home / 15,620.70-21,549.72-9,157.07

Finding the Fourth Proportional to 15,620.70, 21,549.72 and 9,157.07

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Solution

The fourth proportional to 15,620.70, 21,549.72 and 9,157.07 is: 12,632.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.70 : 21,549.72 = 9,157.07 : x
  2. Step 2: Convert to fraction form
    15,620.70/21,549.72 = 9,157.07/x
  3. Step 3: Cross multiply
    15,620.70x = 21,549.72 × 9,157.07
  4. Step 4: Simplify right side
    15,620.70x = 197,332,186.77
  5. Step 5: Solve for x
    x = 197,332,186.77/15,620.70
  6. Step 6: Final answer
    x = 12,632.74

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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.