Home / 12,885.80-19,332.30-6,312.20

Finding the Fourth Proportional to 12,885.80, 19,332.30 and 6,312.20

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Solution

The fourth proportional to 12,885.80, 19,332.30 and 6,312.20 is: 9,470.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.80 : 19,332.30 = 6,312.20 : x
  2. Step 2: Convert to fraction form
    12,885.80/19,332.30 = 6,312.20/x
  3. Step 3: Cross multiply
    12,885.80x = 19,332.30 × 6,312.20
  4. Step 4: Simplify right side
    12,885.80x = 122,029,344.06
  5. Step 5: Solve for x
    x = 122,029,344.06/12,885.80
  6. Step 6: Final answer
    x = 9,470.06

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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.