Home / 13,708.35-20,531.70-8,357.00

Finding the Fourth Proportional to 13,708.35, 20,531.70 and 8,357.00

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Solution

The fourth proportional to 13,708.35, 20,531.70 and 8,357.00 is: 12,516.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.35 : 20,531.70 = 8,357.00 : x
  2. Step 2: Convert to fraction form
    13,708.35/20,531.70 = 8,357.00/x
  3. Step 3: Cross multiply
    13,708.35x = 20,531.70 × 8,357.00
  4. Step 4: Simplify right side
    13,708.35x = 171,583,314.24
  5. Step 5: Solve for x
    x = 171,583,314.24/13,708.35
  6. Step 6: Final answer
    x = 12,516.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.