Home / 21,288.17-31,899.29-14,627.84

Finding the Fourth Proportional to 21,288.17, 31,899.29 and 14,627.84

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Solution

The fourth proportional to 21,288.17, 31,899.29 and 14,627.84 is: 21,919.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.17 : 31,899.29 = 14,627.84 : x
  2. Step 2: Convert to fraction form
    21,288.17/31,899.29 = 14,627.84/x
  3. Step 3: Cross multiply
    21,288.17x = 31,899.29 × 14,627.84
  4. Step 4: Simplify right side
    21,288.17x = 466,617,710.23
  5. Step 5: Solve for x
    x = 466,617,710.23/21,288.17
  6. Step 6: Final answer
    x = 21,919.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.