Home / 21,212.73-29,271.85-12,260.81

Finding the Fourth Proportional to 21,212.73, 29,271.85 and 12,260.81

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Solution

The fourth proportional to 21,212.73, 29,271.85 and 12,260.81 is: 16,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.73 : 29,271.85 = 12,260.81 : x
  2. Step 2: Convert to fraction form
    21,212.73/29,271.85 = 12,260.81/x
  3. Step 3: Cross multiply
    21,212.73x = 29,271.85 × 12,260.81
  4. Step 4: Simplify right side
    21,212.73x = 358,896,591.20
  5. Step 5: Solve for x
    x = 358,896,591.20/21,212.73
  6. Step 6: Final answer
    x = 16,918.93

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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.