Home / 21,481.17-29,632.55-12,525.40

Finding the Fourth Proportional to 21,481.17, 29,632.55 and 12,525.40

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Solution

The fourth proportional to 21,481.17, 29,632.55 and 12,525.40 is: 17,278.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,481.17 : 29,632.55 = 12,525.40 : x
  2. Step 2: Convert to fraction form
    21,481.17/29,632.55 = 12,525.40/x
  3. Step 3: Cross multiply
    21,481.17x = 29,632.55 × 12,525.40
  4. Step 4: Simplify right side
    21,481.17x = 371,159,541.77
  5. Step 5: Solve for x
    x = 371,159,541.77/21,481.17
  6. Step 6: Final answer
    x = 17,278.37

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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.