Home / 19,408.71-29,120.45-7,730.13

Finding the Fourth Proportional to 19,408.71, 29,120.45 and 7,730.13

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Solution

The fourth proportional to 19,408.71, 29,120.45 and 7,730.13 is: 11,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,408.71 : 29,120.45 = 7,730.13 : x
  2. Step 2: Convert to fraction form
    19,408.71/29,120.45 = 7,730.13/x
  3. Step 3: Cross multiply
    19,408.71x = 29,120.45 × 7,730.13
  4. Step 4: Simplify right side
    19,408.71x = 225,104,825.51
  5. Step 5: Solve for x
    x = 225,104,825.51/19,408.71
  6. Step 6: Final answer
    x = 11,598.13

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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.