Home / 21,772.85-32,478.53-21,044.01

Finding the Fourth Proportional to 21,772.85, 32,478.53 and 21,044.01

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Solution

The fourth proportional to 21,772.85, 32,478.53 and 21,044.01 is: 31,391.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,772.85 : 32,478.53 = 21,044.01 : x
  2. Step 2: Convert to fraction form
    21,772.85/32,478.53 = 21,044.01/x
  3. Step 3: Cross multiply
    21,772.85x = 32,478.53 × 21,044.01
  4. Step 4: Simplify right side
    21,772.85x = 683,478,510.11
  5. Step 5: Solve for x
    x = 683,478,510.11/21,772.85
  6. Step 6: Final answer
    x = 31,391.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.