Home / 13,389.23-18,474.01-8,013.40

Finding the Fourth Proportional to 13,389.23, 18,474.01 and 8,013.40

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Solution

The fourth proportional to 13,389.23, 18,474.01 and 8,013.40 is: 11,056.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.23 : 18,474.01 = 8,013.40 : x
  2. Step 2: Convert to fraction form
    13,389.23/18,474.01 = 8,013.40/x
  3. Step 3: Cross multiply
    13,389.23x = 18,474.01 × 8,013.40
  4. Step 4: Simplify right side
    13,389.23x = 148,039,565.52
  5. Step 5: Solve for x
    x = 148,039,565.52/13,389.23
  6. Step 6: Final answer
    x = 11,056.61

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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.