Home / 13,060.18-19,688.14-12,191.20

Finding the Fourth Proportional to 13,060.18, 19,688.14 and 12,191.20

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Solution

The fourth proportional to 13,060.18, 19,688.14 and 12,191.20 is: 18,378.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,060.18 : 19,688.14 = 12,191.20 : x
  2. Step 2: Convert to fraction form
    13,060.18/19,688.14 = 12,191.20/x
  3. Step 3: Cross multiply
    13,060.18x = 19,688.14 × 12,191.20
  4. Step 4: Simplify right side
    13,060.18x = 240,022,052.37
  5. Step 5: Solve for x
    x = 240,022,052.37/13,060.18
  6. Step 6: Final answer
    x = 18,378.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.