Home / 15,362.32-21,191.40-10,385.68

Finding the Fourth Proportional to 15,362.32, 21,191.40 and 10,385.68

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Solution

The fourth proportional to 15,362.32, 21,191.40 and 10,385.68 is: 14,326.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,362.32 : 21,191.40 = 10,385.68 : x
  2. Step 2: Convert to fraction form
    15,362.32/21,191.40 = 10,385.68/x
  3. Step 3: Cross multiply
    15,362.32x = 21,191.40 × 10,385.68
  4. Step 4: Simplify right side
    15,362.32x = 220,087,099.15
  5. Step 5: Solve for x
    x = 220,087,099.15/15,362.32
  6. Step 6: Final answer
    x = 14,326.42

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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.