Home / 21,328.65-29,435.00-12,376.17

Finding the Fourth Proportional to 21,328.65, 29,435.00 and 12,376.17

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Solution

The fourth proportional to 21,328.65, 29,435.00 and 12,376.17 is: 17,079.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.65 : 29,435.00 = 12,376.17 : x
  2. Step 2: Convert to fraction form
    21,328.65/29,435.00 = 12,376.17/x
  3. Step 3: Cross multiply
    21,328.65x = 29,435.00 × 12,376.17
  4. Step 4: Simplify right side
    21,328.65x = 364,292,502.07
  5. Step 5: Solve for x
    x = 364,292,502.07/21,328.65
  6. Step 6: Final answer
    x = 17,079.96

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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.