Home / 13,014.72-17,962.08-7,981.92

Finding the Fourth Proportional to 13,014.72, 17,962.08 and 7,981.92

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Solution

The fourth proportional to 13,014.72, 17,962.08 and 7,981.92 is: 11,016.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,014.72 : 17,962.08 = 7,981.92 : x
  2. Step 2: Convert to fraction form
    13,014.72/17,962.08 = 7,981.92/x
  3. Step 3: Cross multiply
    13,014.72x = 17,962.08 × 7,981.92
  4. Step 4: Simplify right side
    13,014.72x = 143,371,885.59
  5. Step 5: Solve for x
    x = 143,371,885.59/13,014.72
  6. Step 6: Final answer
    x = 11,016.13

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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.