Home / 10,078.16-15,117.23-5,490.32

Finding the Fourth Proportional to 10,078.16, 15,117.23 and 5,490.32

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Solution

The fourth proportional to 10,078.16, 15,117.23 and 5,490.32 is: 8,235.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078.16 : 15,117.23 = 5,490.32 : x
  2. Step 2: Convert to fraction form
    10,078.16/15,117.23 = 5,490.32/x
  3. Step 3: Cross multiply
    10,078.16x = 15,117.23 × 5,490.32
  4. Step 4: Simplify right side
    10,078.16x = 82,998,368.35
  5. Step 5: Solve for x
    x = 82,998,368.35/10,078.16
  6. Step 6: Final answer
    x = 8,235.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.