Home / 13,430.42-20,145.90-6,411.26

Finding the Fourth Proportional to 13,430.42, 20,145.90 and 6,411.26

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Solution

The fourth proportional to 13,430.42, 20,145.90 and 6,411.26 is: 9,617.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.42 : 20,145.90 = 6,411.26 : x
  2. Step 2: Convert to fraction form
    13,430.42/20,145.90 = 6,411.26/x
  3. Step 3: Cross multiply
    13,430.42x = 20,145.90 × 6,411.26
  4. Step 4: Simplify right side
    13,430.42x = 129,160,602.83
  5. Step 5: Solve for x
    x = 129,160,602.83/13,430.42
  6. Step 6: Final answer
    x = 9,617.02

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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.