Home / 9,192.18-12,681.45-6,399.30

Finding the Fourth Proportional to 9,192.18, 12,681.45 and 6,399.30

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Solution

The fourth proportional to 9,192.18, 12,681.45 and 6,399.30 is: 8,828.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,192.18 : 12,681.45 = 6,399.30 : x
  2. Step 2: Convert to fraction form
    9,192.18/12,681.45 = 6,399.30/x
  3. Step 3: Cross multiply
    9,192.18x = 12,681.45 × 6,399.30
  4. Step 4: Simplify right side
    9,192.18x = 81,152,402.99
  5. Step 5: Solve for x
    x = 81,152,402.99/9,192.18
  6. Step 6: Final answer
    x = 8,828.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.