Home / 21,656.70-29,886.74-12,710.66

Finding the Fourth Proportional to 21,656.70, 29,886.74 and 12,710.66

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Solution

The fourth proportional to 21,656.70, 29,886.74 and 12,710.66 is: 17,540.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.70 : 29,886.74 = 12,710.66 : x
  2. Step 2: Convert to fraction form
    21,656.70/29,886.74 = 12,710.66/x
  3. Step 3: Cross multiply
    21,656.70x = 29,886.74 × 12,710.66
  4. Step 4: Simplify right side
    21,656.70x = 379,880,025.33
  5. Step 5: Solve for x
    x = 379,880,025.33/21,656.70
  6. Step 6: Final answer
    x = 17,540.99

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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.