Home / 13,357.58-20,030.28-7,115.99

Finding the Fourth Proportional to 13,357.58, 20,030.28 and 7,115.99

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Solution

The fourth proportional to 13,357.58, 20,030.28 and 7,115.99 is: 10,670.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.58 : 20,030.28 = 7,115.99 : x
  2. Step 2: Convert to fraction form
    13,357.58/20,030.28 = 7,115.99/x
  3. Step 3: Cross multiply
    13,357.58x = 20,030.28 × 7,115.99
  4. Step 4: Simplify right side
    13,357.58x = 142,535,272.18
  5. Step 5: Solve for x
    x = 142,535,272.18/13,357.58
  6. Step 6: Final answer
    x = 10,670.74

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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.