Home / 21,275.76-29,361.40-12,323.12

Finding the Fourth Proportional to 21,275.76, 29,361.40 and 12,323.12

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Solution

The fourth proportional to 21,275.76, 29,361.40 and 12,323.12 is: 17,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.76 : 29,361.40 = 12,323.12 : x
  2. Step 2: Convert to fraction form
    21,275.76/29,361.40 = 12,323.12/x
  3. Step 3: Cross multiply
    21,275.76x = 29,361.40 × 12,323.12
  4. Step 4: Simplify right side
    21,275.76x = 361,824,055.57
  5. Step 5: Solve for x
    x = 361,824,055.57/21,275.76
  6. Step 6: Final answer
    x = 17,006.40

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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.