Home / 21,312.32-29,411.22-11,752.56

Finding the Fourth Proportional to 21,312.32, 29,411.22 and 11,752.56

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Solution

The fourth proportional to 21,312.32, 29,411.22 and 11,752.56 is: 16,218.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.32 : 29,411.22 = 11,752.56 : x
  2. Step 2: Convert to fraction form
    21,312.32/29,411.22 = 11,752.56/x
  3. Step 3: Cross multiply
    21,312.32x = 29,411.22 × 11,752.56
  4. Step 4: Simplify right side
    21,312.32x = 345,657,127.72
  5. Step 5: Solve for x
    x = 345,657,127.72/21,312.32
  6. Step 6: Final answer
    x = 16,218.65

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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.