Home / 13,156.25-18,157.17-7,492.35

Finding the Fourth Proportional to 13,156.25, 18,157.17 and 7,492.35

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Solution

The fourth proportional to 13,156.25, 18,157.17 and 7,492.35 is: 10,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.25 : 18,157.17 = 7,492.35 : x
  2. Step 2: Convert to fraction form
    13,156.25/18,157.17 = 7,492.35/x
  3. Step 3: Cross multiply
    13,156.25x = 18,157.17 × 7,492.35
  4. Step 4: Simplify right side
    13,156.25x = 136,039,872.65
  5. Step 5: Solve for x
    x = 136,039,872.65/13,156.25
  6. Step 6: Final answer
    x = 10,340.33

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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.