Home / 21,017.57-29,002.91-11,586.15

Finding the Fourth Proportional to 21,017.57, 29,002.91 and 11,586.15

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Solution

The fourth proportional to 21,017.57, 29,002.91 and 11,586.15 is: 15,988.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.57 : 29,002.91 = 11,586.15 : x
  2. Step 2: Convert to fraction form
    21,017.57/29,002.91 = 11,586.15/x
  3. Step 3: Cross multiply
    21,017.57x = 29,002.91 × 11,586.15
  4. Step 4: Simplify right side
    21,017.57x = 336,032,007.77
  5. Step 5: Solve for x
    x = 336,032,007.77/21,017.57
  6. Step 6: Final answer
    x = 15,988.15

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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.