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Finding the Fourth Proportional to 19,361.68, 26,715.04 and 12,657.13

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Solution

The fourth proportional to 19,361.68, 26,715.04 and 12,657.13 is: 17,464.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,361.68 : 26,715.04 = 12,657.13 : x
  2. Step 2: Convert to fraction form
    19,361.68/26,715.04 = 12,657.13/x
  3. Step 3: Cross multiply
    19,361.68x = 26,715.04 × 12,657.13
  4. Step 4: Simplify right side
    19,361.68x = 338,135,734.24
  5. Step 5: Solve for x
    x = 338,135,734.24/19,361.68
  6. Step 6: Final answer
    x = 17,464.17

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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.