Home / 21,271.47-29,346.69-21,238.66

Finding the Fourth Proportional to 21,271.47, 29,346.69 and 21,238.66

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Solution

The fourth proportional to 21,271.47, 29,346.69 and 21,238.66 is: 29,301.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.47 : 29,346.69 = 21,238.66 : x
  2. Step 2: Convert to fraction form
    21,271.47/29,346.69 = 21,238.66/x
  3. Step 3: Cross multiply
    21,271.47x = 29,346.69 × 21,238.66
  4. Step 4: Simplify right side
    21,271.47x = 623,284,371.04
  5. Step 5: Solve for x
    x = 623,284,371.04/21,271.47
  6. Step 6: Final answer
    x = 29,301.42

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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.