Home / 12,968.29-19,421.25-7,404.77

Finding the Fourth Proportional to 12,968.29, 19,421.25 and 7,404.77

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Solution

The fourth proportional to 12,968.29, 19,421.25 and 7,404.77 is: 11,089.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968.29 : 19,421.25 = 7,404.77 : x
  2. Step 2: Convert to fraction form
    12,968.29/19,421.25 = 7,404.77/x
  3. Step 3: Cross multiply
    12,968.29x = 19,421.25 × 7,404.77
  4. Step 4: Simplify right side
    12,968.29x = 143,809,937.92
  5. Step 5: Solve for x
    x = 143,809,937.92/12,968.29
  6. Step 6: Final answer
    x = 11,089.35

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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.