Home / 21,595.32-29,803.66-12,642.28

Finding the Fourth Proportional to 21,595.32, 29,803.66 and 12,642.28

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Solution

The fourth proportional to 21,595.32, 29,803.66 and 12,642.28 is: 17,447.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595.32 : 29,803.66 = 12,642.28 : x
  2. Step 2: Convert to fraction form
    21,595.32/29,803.66 = 12,642.28/x
  3. Step 3: Cross multiply
    21,595.32x = 29,803.66 × 12,642.28
  4. Step 4: Simplify right side
    21,595.32x = 376,786,214.74
  5. Step 5: Solve for x
    x = 376,786,214.74/21,595.32
  6. Step 6: Final answer
    x = 17,447.59

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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.