Home / 15,269.32-21,072.72-8,555.52

Finding the Fourth Proportional to 15,269.32, 21,072.72 and 8,555.52

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Solution

The fourth proportional to 15,269.32, 21,072.72 and 8,555.52 is: 11,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,269.32 : 21,072.72 = 8,555.52 : x
  2. Step 2: Convert to fraction form
    15,269.32/21,072.72 = 8,555.52/x
  3. Step 3: Cross multiply
    15,269.32x = 21,072.72 × 8,555.52
  4. Step 4: Simplify right side
    15,269.32x = 180,288,077.41
  5. Step 5: Solve for x
    x = 180,288,077.41/15,269.32
  6. Step 6: Final answer
    x = 11,807.21

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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.