Home / 21,040.34-29,031.63-12,657.38

Finding the Fourth Proportional to 21,040.34, 29,031.63 and 12,657.38

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Solution

The fourth proportional to 21,040.34, 29,031.63 and 12,657.38 is: 17,464.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.34 : 29,031.63 = 12,657.38 : x
  2. Step 2: Convert to fraction form
    21,040.34/29,031.63 = 12,657.38/x
  3. Step 3: Cross multiply
    21,040.34x = 29,031.63 × 12,657.38
  4. Step 4: Simplify right side
    21,040.34x = 367,464,372.93
  5. Step 5: Solve for x
    x = 367,464,372.93/21,040.34
  6. Step 6: Final answer
    x = 17,464.75

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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.