Home / 21,400.92-29,532.78-11,970.36

Finding the Fourth Proportional to 21,400.92, 29,532.78 and 11,970.36

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Solution

The fourth proportional to 21,400.92, 29,532.78 and 11,970.36 is: 16,518.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.92 : 29,532.78 = 11,970.36 : x
  2. Step 2: Convert to fraction form
    21,400.92/29,532.78 = 11,970.36/x
  3. Step 3: Cross multiply
    21,400.92x = 29,532.78 × 11,970.36
  4. Step 4: Simplify right side
    21,400.92x = 353,518,008.40
  5. Step 5: Solve for x
    x = 353,518,008.40/21,400.92
  6. Step 6: Final answer
    x = 16,518.82

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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.