Home / 12,450.24-18,681.76-7,830.72

Finding the Fourth Proportional to 12,450.24, 18,681.76 and 7,830.72

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Solution

The fourth proportional to 12,450.24, 18,681.76 and 7,830.72 is: 11,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450.24 : 18,681.76 = 7,830.72 : x
  2. Step 2: Convert to fraction form
    12,450.24/18,681.76 = 7,830.72/x
  3. Step 3: Cross multiply
    12,450.24x = 18,681.76 × 7,830.72
  4. Step 4: Simplify right side
    12,450.24x = 146,291,631.67
  5. Step 5: Solve for x
    x = 146,291,631.67/12,450.24
  6. Step 6: Final answer
    x = 11,750.11

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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.