Home / 21,017.18-29,003.91-11,586.08

Finding the Fourth Proportional to 21,017.18, 29,003.91 and 11,586.08

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Solution

The fourth proportional to 21,017.18, 29,003.91 and 11,586.08 is: 15,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.18 : 29,003.91 = 11,586.08 : x
  2. Step 2: Convert to fraction form
    21,017.18/29,003.91 = 11,586.08/x
  3. Step 3: Cross multiply
    21,017.18x = 29,003.91 × 11,586.08
  4. Step 4: Simplify right side
    21,017.18x = 336,041,650.63
  5. Step 5: Solve for x
    x = 336,041,650.63/21,017.18
  6. Step 6: Final answer
    x = 15,988.90

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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.