Home / 12,282.24-18,384.12-6,430.80

Finding the Fourth Proportional to 12,282.24, 18,384.12 and 6,430.80

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Solution

The fourth proportional to 12,282.24, 18,384.12 and 6,430.80 is: 9,625.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,282.24 : 18,384.12 = 6,430.80 : x
  2. Step 2: Convert to fraction form
    12,282.24/18,384.12 = 6,430.80/x
  3. Step 3: Cross multiply
    12,282.24x = 18,384.12 × 6,430.80
  4. Step 4: Simplify right side
    12,282.24x = 118,224,598.90
  5. Step 5: Solve for x
    x = 118,224,598.90/12,282.24
  6. Step 6: Final answer
    x = 9,625.65

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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.