Home / 13,931.10-20,898-4,070.16

Finding the Fourth Proportional to 13,931.10, 20,898 and 4,070.16

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Solution

The fourth proportional to 13,931.10, 20,898 and 4,070.16 is: 6,105.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.10 : 20,898 = 4,070.16 : x
  2. Step 2: Convert to fraction form
    13,931.10/20,898 = 4,070.16/x
  3. Step 3: Cross multiply
    13,931.10x = 20,898 × 4,070.16
  4. Step 4: Simplify right side
    13,931.10x = 85,058,203.68
  5. Step 5: Solve for x
    x = 85,058,203.68/13,931.10
  6. Step 6: Final answer
    x = 6,105.63

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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.