Home / 28,935.75-39,964.14-19,487.91

Finding the Fourth Proportional to 28,935.75, 39,964.14 and 19,487.91

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Solution

The fourth proportional to 28,935.75, 39,964.14 and 19,487.91 is: 26,915.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,935.75 : 39,964.14 = 19,487.91 : x
  2. Step 2: Convert to fraction form
    28,935.75/39,964.14 = 19,487.91/x
  3. Step 3: Cross multiply
    28,935.75x = 39,964.14 × 19,487.91
  4. Step 4: Simplify right side
    28,935.75x = 778,817,563.55
  5. Step 5: Solve for x
    x = 778,817,563.55/28,935.75
  6. Step 6: Final answer
    x = 26,915.41

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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.