Home / 21,032.44-31,539.42-7,875.58

Finding the Fourth Proportional to 21,032.44, 31,539.42 and 7,875.58

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Solution

The fourth proportional to 21,032.44, 31,539.42 and 7,875.58 is: 11,809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032.44 : 31,539.42 = 7,875.58 : x
  2. Step 2: Convert to fraction form
    21,032.44/31,539.42 = 7,875.58/x
  3. Step 3: Cross multiply
    21,032.44x = 31,539.42 × 7,875.58
  4. Step 4: Simplify right side
    21,032.44x = 248,391,185.99
  5. Step 5: Solve for x
    x = 248,391,185.99/21,032.44
  6. Step 6: Final answer
    x = 11,809.91

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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.