Home / 21,807.21-30,095.51-12,376.38

Finding the Fourth Proportional to 21,807.21, 30,095.51 and 12,376.38

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Solution

The fourth proportional to 21,807.21, 30,095.51 and 12,376.38 is: 17,080.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,807.21 : 30,095.51 = 12,376.38 : x
  2. Step 2: Convert to fraction form
    21,807.21/30,095.51 = 12,376.38/x
  3. Step 3: Cross multiply
    21,807.21x = 30,095.51 × 12,376.38
  4. Step 4: Simplify right side
    21,807.21x = 372,473,406.17
  5. Step 5: Solve for x
    x = 372,473,406.17/21,807.21
  6. Step 6: Final answer
    x = 17,080.29

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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.