Home / 21,070.74-31,537.53-15,521.90

Finding the Fourth Proportional to 21,070.74, 31,537.53 and 15,521.90

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Solution

The fourth proportional to 21,070.74, 31,537.53 and 15,521.90 is: 23,232.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.74 : 31,537.53 = 15,521.90 : x
  2. Step 2: Convert to fraction form
    21,070.74/31,537.53 = 15,521.90/x
  3. Step 3: Cross multiply
    21,070.74x = 31,537.53 × 15,521.90
  4. Step 4: Simplify right side
    21,070.74x = 489,522,386.91
  5. Step 5: Solve for x
    x = 489,522,386.91/21,070.74
  6. Step 6: Final answer
    x = 23,232.33

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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.