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Finding the Fourth Proportional to 28,572, 39,386.16 and 24,571.68

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Solution

The fourth proportional to 28,572, 39,386.16 and 24,571.68 is: 33,871.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572 : 39,386.16 = 24,571.68 : x
  2. Step 2: Convert to fraction form
    28,572/39,386.16 = 24,571.68/x
  3. Step 3: Cross multiply
    28,572x = 39,386.16 × 24,571.68
  4. Step 4: Simplify right side
    28,572x = 967,784,119.95
  5. Step 5: Solve for x
    x = 967,784,119.95/28,572
  6. Step 6: Final answer
    x = 33,871.77

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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.