Home / 20,538.61-28,294.13-19,538.06

Finding the Fourth Proportional to 20,538.61, 28,294.13 and 19,538.06

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Solution

The fourth proportional to 20,538.61, 28,294.13 and 19,538.06 is: 26,915.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.61 : 28,294.13 = 19,538.06 : x
  2. Step 2: Convert to fraction form
    20,538.61/28,294.13 = 19,538.06/x
  3. Step 3: Cross multiply
    20,538.61x = 28,294.13 × 19,538.06
  4. Step 4: Simplify right side
    20,538.61x = 552,812,316.96
  5. Step 5: Solve for x
    x = 552,812,316.96/20,538.61
  6. Step 6: Final answer
    x = 26,915.76

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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.