Home / 15,313.95-21,131.96-8,599.05

Finding the Fourth Proportional to 15,313.95, 21,131.96 and 8,599.05

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Solution

The fourth proportional to 15,313.95, 21,131.96 and 8,599.05 is: 11,865.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,313.95 : 21,131.96 = 8,599.05 : x
  2. Step 2: Convert to fraction form
    15,313.95/21,131.96 = 8,599.05/x
  3. Step 3: Cross multiply
    15,313.95x = 21,131.96 × 8,599.05
  4. Step 4: Simplify right side
    15,313.95x = 181,714,737.64
  5. Step 5: Solve for x
    x = 181,714,737.64/15,313.95
  6. Step 6: Final answer
    x = 11,865.96

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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.