Home / 21,370.78-29,491.62-12,297.16

Finding the Fourth Proportional to 21,370.78, 29,491.62 and 12,297.16

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Solution

The fourth proportional to 21,370.78, 29,491.62 and 12,297.16 is: 16,970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.78 : 29,491.62 = 12,297.16 : x
  2. Step 2: Convert to fraction form
    21,370.78/29,491.62 = 12,297.16/x
  3. Step 3: Cross multiply
    21,370.78x = 29,491.62 × 12,297.16
  4. Step 4: Simplify right side
    21,370.78x = 362,663,169.80
  5. Step 5: Solve for x
    x = 362,663,169.80/21,370.78
  6. Step 6: Final answer
    x = 16,970.05

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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.