Home / 21,376.04-29,499.38-12,424.32

Finding the Fourth Proportional to 21,376.04, 29,499.38 and 12,424.32

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Solution

The fourth proportional to 21,376.04, 29,499.38 and 12,424.32 is: 17,145.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.04 : 29,499.38 = 12,424.32 : x
  2. Step 2: Convert to fraction form
    21,376.04/29,499.38 = 12,424.32/x
  3. Step 3: Cross multiply
    21,376.04x = 29,499.38 × 12,424.32
  4. Step 4: Simplify right side
    21,376.04x = 366,509,674.80
  5. Step 5: Solve for x
    x = 366,509,674.80/21,376.04
  6. Step 6: Final answer
    x = 17,145.82

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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.