Home / 15,980.86-22,003.40-13,586.12

Finding the Fourth Proportional to 15,980.86, 22,003.40 and 13,586.12

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Solution

The fourth proportional to 15,980.86, 22,003.40 and 13,586.12 is: 18,706.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,980.86 : 22,003.40 = 13,586.12 : x
  2. Step 2: Convert to fraction form
    15,980.86/22,003.40 = 13,586.12/x
  3. Step 3: Cross multiply
    15,980.86x = 22,003.40 × 13,586.12
  4. Step 4: Simplify right side
    15,980.86x = 298,940,832.81
  5. Step 5: Solve for x
    x = 298,940,832.81/15,980.86
  6. Step 6: Final answer
    x = 18,706.18

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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.