Home / 21,328.59-29,433.06-12,376.92

Finding the Fourth Proportional to 21,328.59, 29,433.06 and 12,376.92

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Solution

The fourth proportional to 21,328.59, 29,433.06 and 12,376.92 is: 17,079.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.59 : 29,433.06 = 12,376.92 : x
  2. Step 2: Convert to fraction form
    21,328.59/29,433.06 = 12,376.92/x
  3. Step 3: Cross multiply
    21,328.59x = 29,433.06 × 12,376.92
  4. Step 4: Simplify right side
    21,328.59x = 364,290,628.98
  5. Step 5: Solve for x
    x = 364,290,628.98/21,328.59
  6. Step 6: Final answer
    x = 17,079.92

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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.