Home / 21,342.79-29,454.74-12,393.10

Finding the Fourth Proportional to 21,342.79, 29,454.74 and 12,393.10

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Solution

The fourth proportional to 21,342.79, 29,454.74 and 12,393.10 is: 17,103.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.79 : 29,454.74 = 12,393.10 : x
  2. Step 2: Convert to fraction form
    21,342.79/29,454.74 = 12,393.10/x
  3. Step 3: Cross multiply
    21,342.79x = 29,454.74 × 12,393.10
  4. Step 4: Simplify right side
    21,342.79x = 365,035,538.29
  5. Step 5: Solve for x
    x = 365,035,538.29/21,342.79
  6. Step 6: Final answer
    x = 17,103.46

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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.