Home / 31,355.03-47,039.72-13,588.67

Finding the Fourth Proportional to 31,355.03, 47,039.72 and 13,588.67

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Solution

The fourth proportional to 31,355.03, 47,039.72 and 13,588.67 is: 20,386.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,355.03 : 47,039.72 = 13,588.67 : x
  2. Step 2: Convert to fraction form
    31,355.03/47,039.72 = 13,588.67/x
  3. Step 3: Cross multiply
    31,355.03x = 47,039.72 × 13,588.67
  4. Step 4: Simplify right side
    31,355.03x = 639,207,114.37
  5. Step 5: Solve for x
    x = 639,207,114.37/31,355.03
  6. Step 6: Final answer
    x = 20,386.11

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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.