Home / 21,510.96-29,685.42-11,951.07

Finding the Fourth Proportional to 21,510.96, 29,685.42 and 11,951.07

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Solution

The fourth proportional to 21,510.96, 29,685.42 and 11,951.07 is: 16,492.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.96 : 29,685.42 = 11,951.07 : x
  2. Step 2: Convert to fraction form
    21,510.96/29,685.42 = 11,951.07/x
  3. Step 3: Cross multiply
    21,510.96x = 29,685.42 × 11,951.07
  4. Step 4: Simplify right side
    21,510.96x = 354,772,532.40
  5. Step 5: Solve for x
    x = 354,772,532.40/21,510.96
  6. Step 6: Final answer
    x = 16,492.64

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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.