Home / 13,455.79-18,566.85-7,487.44

Finding the Fourth Proportional to 13,455.79, 18,566.85 and 7,487.44

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Solution

The fourth proportional to 13,455.79, 18,566.85 and 7,487.44 is: 10,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.79 : 18,566.85 = 7,487.44 : x
  2. Step 2: Convert to fraction form
    13,455.79/18,566.85 = 7,487.44/x
  3. Step 3: Cross multiply
    13,455.79x = 18,566.85 × 7,487.44
  4. Step 4: Simplify right side
    13,455.79x = 139,018,175.36
  5. Step 5: Solve for x
    x = 139,018,175.36/13,455.79
  6. Step 6: Final answer
    x = 10,331.48

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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.