Home / 10,620.30-15,928.10-6,445.34

Finding the Fourth Proportional to 10,620.30, 15,928.10 and 6,445.34

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Solution

The fourth proportional to 10,620.30, 15,928.10 and 6,445.34 is: 9,666.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.30 : 15,928.10 = 6,445.34 : x
  2. Step 2: Convert to fraction form
    10,620.30/15,928.10 = 6,445.34/x
  3. Step 3: Cross multiply
    10,620.30x = 15,928.10 × 6,445.34
  4. Step 4: Simplify right side
    10,620.30x = 102,661,908.19
  5. Step 5: Solve for x
    x = 102,661,908.19/10,620.30
  6. Step 6: Final answer
    x = 9,666.57

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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.