Home / 21,929.04-32,859-13,168.08

Finding the Fourth Proportional to 21,929.04, 32,859 and 13,168.08

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Solution

The fourth proportional to 21,929.04, 32,859 and 13,168.08 is: 19,731.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.04 : 32,859 = 13,168.08 : x
  2. Step 2: Convert to fraction form
    21,929.04/32,859 = 13,168.08/x
  3. Step 3: Cross multiply
    21,929.04x = 32,859 × 13,168.08
  4. Step 4: Simplify right side
    21,929.04x = 432,689,940.72
  5. Step 5: Solve for x
    x = 432,689,940.72/21,929.04
  6. Step 6: Final answer
    x = 19,731.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.