Home / 13,355.09-18,429.69-7,386.62

Finding the Fourth Proportional to 13,355.09, 18,429.69 and 7,386.62

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Solution

The fourth proportional to 13,355.09, 18,429.69 and 7,386.62 is: 10,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.09 : 18,429.69 = 7,386.62 : x
  2. Step 2: Convert to fraction form
    13,355.09/18,429.69 = 7,386.62/x
  3. Step 3: Cross multiply
    13,355.09x = 18,429.69 × 7,386.62
  4. Step 4: Simplify right side
    13,355.09x = 136,133,024.60
  5. Step 5: Solve for x
    x = 136,133,024.60/13,355.09
  6. Step 6: Final answer
    x = 10,193.35

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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.