Home / 21,253.68-29,330.24-13,300.43

Finding the Fourth Proportional to 21,253.68, 29,330.24 and 13,300.43

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Solution

The fourth proportional to 21,253.68, 29,330.24 and 13,300.43 is: 18,354.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.68 : 29,330.24 = 13,300.43 : x
  2. Step 2: Convert to fraction form
    21,253.68/29,330.24 = 13,300.43/x
  3. Step 3: Cross multiply
    21,253.68x = 29,330.24 × 13,300.43
  4. Step 4: Simplify right side
    21,253.68x = 390,104,590.85
  5. Step 5: Solve for x
    x = 390,104,590.85/21,253.68
  6. Step 6: Final answer
    x = 18,354.68

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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.