Home / 15,018.10-20,724.14-8,303.34

Finding the Fourth Proportional to 15,018.10, 20,724.14 and 8,303.34

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Solution

The fourth proportional to 15,018.10, 20,724.14 and 8,303.34 is: 11,458.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.10 : 20,724.14 = 8,303.34 : x
  2. Step 2: Convert to fraction form
    15,018.10/20,724.14 = 8,303.34/x
  3. Step 3: Cross multiply
    15,018.10x = 20,724.14 × 8,303.34
  4. Step 4: Simplify right side
    15,018.10x = 172,079,477.01
  5. Step 5: Solve for x
    x = 172,079,477.01/15,018.10
  6. Step 6: Final answer
    x = 11,458.14

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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.