Home / 21,590.15-29,796.56-12,637.13

Finding the Fourth Proportional to 21,590.15, 29,796.56 and 12,637.13

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Solution

The fourth proportional to 21,590.15, 29,796.56 and 12,637.13 is: 17,440.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,590.15 : 29,796.56 = 12,637.13 : x
  2. Step 2: Convert to fraction form
    21,590.15/29,796.56 = 12,637.13/x
  3. Step 3: Cross multiply
    21,590.15x = 29,796.56 × 12,637.13
  4. Step 4: Simplify right side
    21,590.15x = 376,543,020.31
  5. Step 5: Solve for x
    x = 376,543,020.31/21,590.15
  6. Step 6: Final answer
    x = 17,440.50

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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.