Home / 11,987.29-17,981.09-4,592.20

Finding the Fourth Proportional to 11,987.29, 17,981.09 and 4,592.20

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Solution

The fourth proportional to 11,987.29, 17,981.09 and 4,592.20 is: 6,888.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.29 : 17,981.09 = 4,592.20 : x
  2. Step 2: Convert to fraction form
    11,987.29/17,981.09 = 4,592.20/x
  3. Step 3: Cross multiply
    11,987.29x = 17,981.09 × 4,592.20
  4. Step 4: Simplify right side
    11,987.29x = 82,572,648.63
  5. Step 5: Solve for x
    x = 82,572,648.63/11,987.29
  6. Step 6: Final answer
    x = 6,888.35

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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.