Home / 15,446.16-21,178.16-15,298.54

Finding the Fourth Proportional to 15,446.16, 21,178.16 and 15,298.54

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Solution

The fourth proportional to 15,446.16, 21,178.16 and 15,298.54 is: 20,975.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.16 : 21,178.16 = 15,298.54 : x
  2. Step 2: Convert to fraction form
    15,446.16/21,178.16 = 15,298.54/x
  3. Step 3: Cross multiply
    15,446.16x = 21,178.16 × 15,298.54
  4. Step 4: Simplify right side
    15,446.16x = 323,994,927.89
  5. Step 5: Solve for x
    x = 323,994,927.89/15,446.16
  6. Step 6: Final answer
    x = 20,975.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.