Home / 28,735.43-39,632.40-19,666.16

Finding the Fourth Proportional to 28,735.43, 39,632.40 and 19,666.16

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Solution

The fourth proportional to 28,735.43, 39,632.40 and 19,666.16 is: 27,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,735.43 : 39,632.40 = 19,666.16 : x
  2. Step 2: Convert to fraction form
    28,735.43/39,632.40 = 19,666.16/x
  3. Step 3: Cross multiply
    28,735.43x = 39,632.40 × 19,666.16
  4. Step 4: Simplify right side
    28,735.43x = 779,417,021.25
  5. Step 5: Solve for x
    x = 779,417,021.25/28,735.43
  6. Step 6: Final answer
    x = 27,123.90

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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.