Home / 12,664.16-18,985.80-9,538.16

Finding the Fourth Proportional to 12,664.16, 18,985.80 and 9,538.16

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Solution

The fourth proportional to 12,664.16, 18,985.80 and 9,538.16 is: 14,299.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.16 : 18,985.80 = 9,538.16 : x
  2. Step 2: Convert to fraction form
    12,664.16/18,985.80 = 9,538.16/x
  3. Step 3: Cross multiply
    12,664.16x = 18,985.80 × 9,538.16
  4. Step 4: Simplify right side
    12,664.16x = 181,089,598.13
  5. Step 5: Solve for x
    x = 181,089,598.13/12,664.16
  6. Step 6: Final answer
    x = 14,299.38

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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.