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Finding the Fourth Proportional to 28,361.79, 42,539.04 and 9,641.07

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Solution

The fourth proportional to 28,361.79, 42,539.04 and 9,641.07 is: 14,460.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,361.79 : 42,539.04 = 9,641.07 : x
  2. Step 2: Convert to fraction form
    28,361.79/42,539.04 = 9,641.07/x
  3. Step 3: Cross multiply
    28,361.79x = 42,539.04 × 9,641.07
  4. Step 4: Simplify right side
    28,361.79x = 410,121,862.37
  5. Step 5: Solve for x
    x = 410,121,862.37/28,361.79
  6. Step 6: Final answer
    x = 14,460.37

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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.