Home / 12,945.07-19,437.05-7,404.67

Finding the Fourth Proportional to 12,945.07, 19,437.05 and 7,404.67

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Solution

The fourth proportional to 12,945.07, 19,437.05 and 7,404.67 is: 11,118.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.07 : 19,437.05 = 7,404.67 : x
  2. Step 2: Convert to fraction form
    12,945.07/19,437.05 = 7,404.67/x
  3. Step 3: Cross multiply
    12,945.07x = 19,437.05 × 7,404.67
  4. Step 4: Simplify right side
    12,945.07x = 143,924,904.00
  5. Step 5: Solve for x
    x = 143,924,904.00/12,945.07
  6. Step 6: Final answer
    x = 11,118.12

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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.