Home / 21,222.16-31,833.02-12,904.48

Finding the Fourth Proportional to 21,222.16, 31,833.02 and 12,904.48

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Solution

The fourth proportional to 21,222.16, 31,833.02 and 12,904.48 is: 19,356.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.16 : 31,833.02 = 12,904.48 : x
  2. Step 2: Convert to fraction form
    21,222.16/31,833.02 = 12,904.48/x
  3. Step 3: Cross multiply
    21,222.16x = 31,833.02 × 12,904.48
  4. Step 4: Simplify right side
    21,222.16x = 410,788,569.93
  5. Step 5: Solve for x
    x = 410,788,569.93/21,222.16
  6. Step 6: Final answer
    x = 19,356.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.