Home / 21,240.24-29,309.10-16,989.76

Finding the Fourth Proportional to 21,240.24, 29,309.10 and 16,989.76

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Solution

The fourth proportional to 21,240.24, 29,309.10 and 16,989.76 is: 23,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.24 : 29,309.10 = 16,989.76 : x
  2. Step 2: Convert to fraction form
    21,240.24/29,309.10 = 16,989.76/x
  3. Step 3: Cross multiply
    21,240.24x = 29,309.10 × 16,989.76
  4. Step 4: Simplify right side
    21,240.24x = 497,954,547.74
  5. Step 5: Solve for x
    x = 497,954,547.74/21,240.24
  6. Step 6: Final answer
    x = 23,443.93

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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.