Home / 19,638.40-27,108.66-12,568.72

Finding the Fourth Proportional to 19,638.40, 27,108.66 and 12,568.72

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Solution

The fourth proportional to 19,638.40, 27,108.66 and 12,568.72 is: 17,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.40 : 27,108.66 = 12,568.72 : x
  2. Step 2: Convert to fraction form
    19,638.40/27,108.66 = 12,568.72/x
  3. Step 3: Cross multiply
    19,638.40x = 27,108.66 × 12,568.72
  4. Step 4: Simplify right side
    19,638.40x = 340,721,157.12
  5. Step 5: Solve for x
    x = 340,721,157.12/19,638.40
  6. Step 6: Final answer
    x = 17,349.74

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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.