Home / 13,525.77-18,665.66-7,557.69

Finding the Fourth Proportional to 13,525.77, 18,665.66 and 7,557.69

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Solution

The fourth proportional to 13,525.77, 18,665.66 and 7,557.69 is: 10,429.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,525.77 : 18,665.66 = 7,557.69 : x
  2. Step 2: Convert to fraction form
    13,525.77/18,665.66 = 7,557.69/x
  3. Step 3: Cross multiply
    13,525.77x = 18,665.66 × 7,557.69
  4. Step 4: Simplify right side
    13,525.77x = 141,069,234.14
  5. Step 5: Solve for x
    x = 141,069,234.14/13,525.77
  6. Step 6: Final answer
    x = 10,429.66

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Half scale
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Double scale
Find fourth proportional to 13,526.77, 18,667.04 and 7,558.69
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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.