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Finding the Fourth Proportional to 38,009.88, 57,018.17 and 9,929.72

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Solution

The fourth proportional to 38,009.88, 57,018.17 and 9,929.72 is: 14,895.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,009.88 : 57,018.17 = 9,929.72 : x
  2. Step 2: Convert to fraction form
    38,009.88/57,018.17 = 9,929.72/x
  3. Step 3: Cross multiply
    38,009.88x = 57,018.17 × 9,929.72
  4. Step 4: Simplify right side
    38,009.88x = 566,174,463.01
  5. Step 5: Solve for x
    x = 566,174,463.01/38,009.88
  6. Step 6: Final answer
    x = 14,895.46

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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.