Home / 13,655.08-18,840.09-9,407.29

Finding the Fourth Proportional to 13,655.08, 18,840.09 and 9,407.29

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Solution

The fourth proportional to 13,655.08, 18,840.09 and 9,407.29 is: 12,979.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.08 : 18,840.09 = 9,407.29 : x
  2. Step 2: Convert to fraction form
    13,655.08/18,840.09 = 9,407.29/x
  3. Step 3: Cross multiply
    13,655.08x = 18,840.09 × 9,407.29
  4. Step 4: Simplify right side
    13,655.08x = 177,234,213.76
  5. Step 5: Solve for x
    x = 177,234,213.76/13,655.08
  6. Step 6: Final answer
    x = 12,979.36

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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.