Home / 38,534.60-57,758.70-19,807.40

Finding the Fourth Proportional to 38,534.60, 57,758.70 and 19,807.40

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Solution

The fourth proportional to 38,534.60, 57,758.70 and 19,807.40 is: 29,688.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,534.60 : 57,758.70 = 19,807.40 : x
  2. Step 2: Convert to fraction form
    38,534.60/57,758.70 = 19,807.40/x
  3. Step 3: Cross multiply
    38,534.60x = 57,758.70 × 19,807.40
  4. Step 4: Simplify right side
    38,534.60x = 1,144,049,674.38
  5. Step 5: Solve for x
    x = 1,144,049,674.38/38,534.60
  6. Step 6: Final answer
    x = 29,688.89

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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.