Home / 19,685.57-27,168.21-12,130.29

Finding the Fourth Proportional to 19,685.57, 27,168.21 and 12,130.29

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Solution

The fourth proportional to 19,685.57, 27,168.21 and 12,130.29 is: 16,741.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,685.57 : 27,168.21 = 12,130.29 : x
  2. Step 2: Convert to fraction form
    19,685.57/27,168.21 = 12,130.29/x
  3. Step 3: Cross multiply
    19,685.57x = 27,168.21 × 12,130.29
  4. Step 4: Simplify right side
    19,685.57x = 329,558,266.08
  5. Step 5: Solve for x
    x = 329,558,266.08/19,685.57
  6. Step 6: Final answer
    x = 16,741.11

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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.