Home / 10,078.29-15,120.47-4,071.26

Finding the Fourth Proportional to 10,078.29, 15,120.47 and 4,071.26

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Solution

The fourth proportional to 10,078.29, 15,120.47 and 4,071.26 is: 6,108.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078.29 : 15,120.47 = 4,071.26 : x
  2. Step 2: Convert to fraction form
    10,078.29/15,120.47 = 4,071.26/x
  3. Step 3: Cross multiply
    10,078.29x = 15,120.47 × 4,071.26
  4. Step 4: Simplify right side
    10,078.29x = 61,559,412.67
  5. Step 5: Solve for x
    x = 61,559,412.67/10,078.29
  6. Step 6: Final answer
    x = 6,108.12

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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.