Home / 13,140.44-18,128.01-8,889.98

Finding the Fourth Proportional to 13,140.44, 18,128.01 and 8,889.98

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Solution

The fourth proportional to 13,140.44, 18,128.01 and 8,889.98 is: 12,264.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.44 : 18,128.01 = 8,889.98 : x
  2. Step 2: Convert to fraction form
    13,140.44/18,128.01 = 8,889.98/x
  3. Step 3: Cross multiply
    13,140.44x = 18,128.01 × 8,889.98
  4. Step 4: Simplify right side
    13,140.44x = 161,157,646.34
  5. Step 5: Solve for x
    x = 161,157,646.34/13,140.44
  6. Step 6: Final answer
    x = 12,264.25

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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.