Home / 15,270.12-21,073.32-8,555.76

Finding the Fourth Proportional to 15,270.12, 21,073.32 and 8,555.76

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Solution

The fourth proportional to 15,270.12, 21,073.32 and 8,555.76 is: 11,807.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.12 : 21,073.32 = 8,555.76 : x
  2. Step 2: Convert to fraction form
    15,270.12/21,073.32 = 8,555.76/x
  3. Step 3: Cross multiply
    15,270.12x = 21,073.32 × 8,555.76
  4. Step 4: Simplify right side
    15,270.12x = 180,298,268.32
  5. Step 5: Solve for x
    x = 180,298,268.32/15,270.12
  6. Step 6: Final answer
    x = 11,807.26

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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.