Home / 13,587.21-20,386.67-7,351.60

Finding the Fourth Proportional to 13,587.21, 20,386.67 and 7,351.60

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Solution

The fourth proportional to 13,587.21, 20,386.67 and 7,351.60 is: 11,030.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.21 : 20,386.67 = 7,351.60 : x
  2. Step 2: Convert to fraction form
    13,587.21/20,386.67 = 7,351.60/x
  3. Step 3: Cross multiply
    13,587.21x = 20,386.67 × 7,351.60
  4. Step 4: Simplify right side
    13,587.21x = 149,874,606.41
  5. Step 5: Solve for x
    x = 149,874,606.41/13,587.21
  6. Step 6: Final answer
    x = 11,030.57

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1.5x scale

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.