Home / 21,288.38-29,377.95-12,341.08

Finding the Fourth Proportional to 21,288.38, 29,377.95 and 12,341.08

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Solution

The fourth proportional to 21,288.38, 29,377.95 and 12,341.08 is: 17,030.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.38 : 29,377.95 = 12,341.08 : x
  2. Step 2: Convert to fraction form
    21,288.38/29,377.95 = 12,341.08/x
  3. Step 3: Cross multiply
    21,288.38x = 29,377.95 × 12,341.08
  4. Step 4: Simplify right side
    21,288.38x = 362,555,484.30
  5. Step 5: Solve for x
    x = 362,555,484.30/21,288.38
  6. Step 6: Final answer
    x = 17,030.68

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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.