Home / 10,947.08-16,420.46-7,428.35

Finding the Fourth Proportional to 10,947.08, 16,420.46 and 7,428.35

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Solution

The fourth proportional to 10,947.08, 16,420.46 and 7,428.35 is: 11,142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,947.08 : 16,420.46 = 7,428.35 : x
  2. Step 2: Convert to fraction form
    10,947.08/16,420.46 = 7,428.35/x
  3. Step 3: Cross multiply
    10,947.08x = 16,420.46 × 7,428.35
  4. Step 4: Simplify right side
    10,947.08x = 121,976,804.80
  5. Step 5: Solve for x
    x = 121,976,804.80/10,947.08
  6. Step 6: Final answer
    x = 11,142.41

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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.