Home / 17,130.40-25,657.20-8,912.80

Finding the Fourth Proportional to 17,130.40, 25,657.20 and 8,912.80

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Solution

The fourth proportional to 17,130.40, 25,657.20 and 8,912.80 is: 13,349.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,130.40 : 25,657.20 = 8,912.80 : x
  2. Step 2: Convert to fraction form
    17,130.40/25,657.20 = 8,912.80/x
  3. Step 3: Cross multiply
    17,130.40x = 25,657.20 × 8,912.80
  4. Step 4: Simplify right side
    17,130.40x = 228,677,492.16
  5. Step 5: Solve for x
    x = 228,677,492.16/17,130.40
  6. Step 6: Final answer
    x = 13,349.22

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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.