Home / 13,355.60-18,429.09-7,386.44

Finding the Fourth Proportional to 13,355.60, 18,429.09 and 7,386.44

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Solution

The fourth proportional to 13,355.60, 18,429.09 and 7,386.44 is: 10,192.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.60 : 18,429.09 = 7,386.44 : x
  2. Step 2: Convert to fraction form
    13,355.60/18,429.09 = 7,386.44/x
  3. Step 3: Cross multiply
    13,355.60x = 18,429.09 × 7,386.44
  4. Step 4: Simplify right side
    13,355.60x = 136,125,275.39
  5. Step 5: Solve for x
    x = 136,125,275.39/13,355.60
  6. Step 6: Final answer
    x = 10,192.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.