Home / 22,619.84-31,212-12,681.92

Finding the Fourth Proportional to 22,619.84, 31,212 and 12,681.92

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Solution

The fourth proportional to 22,619.84, 31,212 and 12,681.92 is: 17,499.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,619.84 : 31,212 = 12,681.92 : x
  2. Step 2: Convert to fraction form
    22,619.84/31,212 = 12,681.92/x
  3. Step 3: Cross multiply
    22,619.84x = 31,212 × 12,681.92
  4. Step 4: Simplify right side
    22,619.84x = 395,828,087.04
  5. Step 5: Solve for x
    x = 395,828,087.04/22,619.84
  6. Step 6: Final answer
    x = 17,499.16

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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.