Home / 21,018.76-29,006.02-11,587.16

Finding the Fourth Proportional to 21,018.76, 29,006.02 and 11,587.16

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Solution

The fourth proportional to 21,018.76, 29,006.02 and 11,587.16 is: 15,990.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.76 : 29,006.02 = 11,587.16 : x
  2. Step 2: Convert to fraction form
    21,018.76/29,006.02 = 11,587.16/x
  3. Step 3: Cross multiply
    21,018.76x = 29,006.02 × 11,587.16
  4. Step 4: Simplify right side
    21,018.76x = 336,097,394.70
  5. Step 5: Solve for x
    x = 336,097,394.70/21,018.76
  6. Step 6: Final answer
    x = 15,990.35

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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.