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Finding the Fourth Proportional to 28,025.43, 42,038.06 and 9,306.89

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Solution

The fourth proportional to 28,025.43, 42,038.06 and 9,306.89 is: 13,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,025.43 : 42,038.06 = 9,306.89 : x
  2. Step 2: Convert to fraction form
    28,025.43/42,038.06 = 9,306.89/x
  3. Step 3: Cross multiply
    28,025.43x = 42,038.06 × 9,306.89
  4. Step 4: Simplify right side
    28,025.43x = 391,243,343.51
  5. Step 5: Solve for x
    x = 391,243,343.51/28,025.43
  6. Step 6: Final answer
    x = 13,960.30

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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.