Home / 13,130.40-19,679.18-6,558.42

Finding the Fourth Proportional to 13,130.40, 19,679.18 and 6,558.42

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Solution

The fourth proportional to 13,130.40, 19,679.18 and 6,558.42 is: 9,829.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.40 : 19,679.18 = 6,558.42 : x
  2. Step 2: Convert to fraction form
    13,130.40/19,679.18 = 6,558.42/x
  3. Step 3: Cross multiply
    13,130.40x = 19,679.18 × 6,558.42
  4. Step 4: Simplify right side
    13,130.40x = 129,064,294.90
  5. Step 5: Solve for x
    x = 129,064,294.90/13,130.40
  6. Step 6: Final answer
    x = 9,829.43

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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.