Home / 21,491.73-29,657.54-11,931.98

Finding the Fourth Proportional to 21,491.73, 29,657.54 and 11,931.98

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Solution

The fourth proportional to 21,491.73, 29,657.54 and 11,931.98 is: 16,465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491.73 : 29,657.54 = 11,931.98 : x
  2. Step 2: Convert to fraction form
    21,491.73/29,657.54 = 11,931.98/x
  3. Step 3: Cross multiply
    21,491.73x = 29,657.54 × 11,931.98
  4. Step 4: Simplify right side
    21,491.73x = 353,873,055.67
  5. Step 5: Solve for x
    x = 353,873,055.67/21,491.73
  6. Step 6: Final answer
    x = 16,465.55

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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.