Home / 13,355.08-18,428.77-7,386.59

Finding the Fourth Proportional to 13,355.08, 18,428.77 and 7,386.59

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Solution

The fourth proportional to 13,355.08, 18,428.77 and 7,386.59 is: 10,192.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.08 : 18,428.77 = 7,386.59 : x
  2. Step 2: Convert to fraction form
    13,355.08/18,428.77 = 7,386.59/x
  3. Step 3: Cross multiply
    13,355.08x = 18,428.77 × 7,386.59
  4. Step 4: Simplify right side
    13,355.08x = 136,125,768.19
  5. Step 5: Solve for x
    x = 136,125,768.19/13,355.08
  6. Step 6: Final answer
    x = 10,192.81

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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.