Home / 21,285.48-29,373.97-12,338.18

Finding the Fourth Proportional to 21,285.48, 29,373.97 and 12,338.18

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Solution

The fourth proportional to 21,285.48, 29,373.97 and 12,338.18 is: 17,026.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.48 : 29,373.97 = 12,338.18 : x
  2. Step 2: Convert to fraction form
    21,285.48/29,373.97 = 12,338.18/x
  3. Step 3: Cross multiply
    21,285.48x = 29,373.97 × 12,338.18
  4. Step 4: Simplify right side
    21,285.48x = 362,421,260.79
  5. Step 5: Solve for x
    x = 362,421,260.79/21,285.48
  6. Step 6: Final answer
    x = 17,026.69

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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.