Home / 22,811.79-31,501.93-21,569.30

Finding the Fourth Proportional to 22,811.79, 31,501.93 and 21,569.30

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Solution

The fourth proportional to 22,811.79, 31,501.93 and 21,569.30 is: 29,786.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,811.79 : 31,501.93 = 21,569.30 : x
  2. Step 2: Convert to fraction form
    22,811.79/31,501.93 = 21,569.30/x
  3. Step 3: Cross multiply
    22,811.79x = 31,501.93 × 21,569.30
  4. Step 4: Simplify right side
    22,811.79x = 679,474,578.75
  5. Step 5: Solve for x
    x = 679,474,578.75/22,811.79
  6. Step 6: Final answer
    x = 29,786.11

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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.