Home / 19,618.59-29,431.40-7,156.11

Finding the Fourth Proportional to 19,618.59, 29,431.40 and 7,156.11

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Solution

The fourth proportional to 19,618.59, 29,431.40 and 7,156.11 is: 10,735.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,618.59 : 29,431.40 = 7,156.11 : x
  2. Step 2: Convert to fraction form
    19,618.59/29,431.40 = 7,156.11/x
  3. Step 3: Cross multiply
    19,618.59x = 29,431.40 × 7,156.11
  4. Step 4: Simplify right side
    19,618.59x = 210,614,300.07
  5. Step 5: Solve for x
    x = 210,614,300.07/19,618.59
  6. Step 6: Final answer
    x = 10,735.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.