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Finding the Fourth Proportional to 15,607.79, 21,539.43 and 8,804.10

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Solution

The fourth proportional to 15,607.79, 21,539.43 and 8,804.10 is: 12,150.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.79 : 21,539.43 = 8,804.10 : x
  2. Step 2: Convert to fraction form
    15,607.79/21,539.43 = 8,804.10/x
  3. Step 3: Cross multiply
    15,607.79x = 21,539.43 × 8,804.10
  4. Step 4: Simplify right side
    15,607.79x = 189,635,295.66
  5. Step 5: Solve for x
    x = 189,635,295.66/15,607.79
  6. Step 6: Final answer
    x = 12,150.04

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1.5x scale

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.