Home / 13,154.42-18,152.80-7,186.12

Finding the Fourth Proportional to 13,154.42, 18,152.80 and 7,186.12

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Solution

The fourth proportional to 13,154.42, 18,152.80 and 7,186.12 is: 9,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.42 : 18,152.80 = 7,186.12 : x
  2. Step 2: Convert to fraction form
    13,154.42/18,152.80 = 7,186.12/x
  3. Step 3: Cross multiply
    13,154.42x = 18,152.80 × 7,186.12
  4. Step 4: Simplify right side
    13,154.42x = 130,448,199.14
  5. Step 5: Solve for x
    x = 130,448,199.14/13,154.42
  6. Step 6: Final answer
    x = 9,916.68

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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.