Home / 10,970.56-15,132.80-8,328.32

Finding the Fourth Proportional to 10,970.56, 15,132.80 and 8,328.32

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Solution

The fourth proportional to 10,970.56, 15,132.80 and 8,328.32 is: 11,488.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,970.56 : 15,132.80 = 8,328.32 : x
  2. Step 2: Convert to fraction form
    10,970.56/15,132.80 = 8,328.32/x
  3. Step 3: Cross multiply
    10,970.56x = 15,132.80 × 8,328.32
  4. Step 4: Simplify right side
    10,970.56x = 126,030,800.90
  5. Step 5: Solve for x
    x = 126,030,800.90/10,970.56
  6. Step 6: Final answer
    x = 11,488.09

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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.