Home / 28,356.70-42,539.10-9,637.60

Finding the Fourth Proportional to 28,356.70, 42,539.10 and 9,637.60

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Solution

The fourth proportional to 28,356.70, 42,539.10 and 9,637.60 is: 14,457.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.70 : 42,539.10 = 9,637.60 : x
  2. Step 2: Convert to fraction form
    28,356.70/42,539.10 = 9,637.60/x
  3. Step 3: Cross multiply
    28,356.70x = 42,539.10 × 9,637.60
  4. Step 4: Simplify right side
    28,356.70x = 409,974,830.16
  5. Step 5: Solve for x
    x = 409,974,830.16/28,356.70
  6. Step 6: Final answer
    x = 14,457.78

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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.