Home / 21,681.72-29,910.06-14,974.20

Finding the Fourth Proportional to 21,681.72, 29,910.06 and 14,974.20

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Solution

The fourth proportional to 21,681.72, 29,910.06 and 14,974.20 is: 20,657.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681.72 : 29,910.06 = 14,974.20 : x
  2. Step 2: Convert to fraction form
    21,681.72/29,910.06 = 14,974.20/x
  3. Step 3: Cross multiply
    21,681.72x = 29,910.06 × 14,974.20
  4. Step 4: Simplify right side
    21,681.72x = 447,879,220.45
  5. Step 5: Solve for x
    x = 447,879,220.45/21,681.72
  6. Step 6: Final answer
    x = 20,657.00

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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.