Home / 13,129.74-19,688.85-4,807.60

Finding the Fourth Proportional to 13,129.74, 19,688.85 and 4,807.60

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Solution

The fourth proportional to 13,129.74, 19,688.85 and 4,807.60 is: 7,209.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.74 : 19,688.85 = 4,807.60 : x
  2. Step 2: Convert to fraction form
    13,129.74/19,688.85 = 4,807.60/x
  3. Step 3: Cross multiply
    13,129.74x = 19,688.85 × 4,807.60
  4. Step 4: Simplify right side
    13,129.74x = 94,656,115.26
  5. Step 5: Solve for x
    x = 94,656,115.26/13,129.74
  6. Step 6: Final answer
    x = 7,209.29

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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.