Home / 21,084.12-29,095.28-12,587.64

Finding the Fourth Proportional to 21,084.12, 29,095.28 and 12,587.64

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Solution

The fourth proportional to 21,084.12, 29,095.28 and 12,587.64 is: 17,370.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.12 : 29,095.28 = 12,587.64 : x
  2. Step 2: Convert to fraction form
    21,084.12/29,095.28 = 12,587.64/x
  3. Step 3: Cross multiply
    21,084.12x = 29,095.28 × 12,587.64
  4. Step 4: Simplify right side
    21,084.12x = 366,240,910.34
  5. Step 5: Solve for x
    x = 366,240,910.34/21,084.12
  6. Step 6: Final answer
    x = 17,370.46

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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.