Home / 12,303.29-18,457.47-3,985.40

Finding the Fourth Proportional to 12,303.29, 18,457.47 and 3,985.40

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Solution

The fourth proportional to 12,303.29, 18,457.47 and 3,985.40 is: 5,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303.29 : 18,457.47 = 3,985.40 : x
  2. Step 2: Convert to fraction form
    12,303.29/18,457.47 = 3,985.40/x
  3. Step 3: Cross multiply
    12,303.29x = 18,457.47 × 3,985.40
  4. Step 4: Simplify right side
    12,303.29x = 73,560,447.08
  5. Step 5: Solve for x
    x = 73,560,447.08/12,303.29
  6. Step 6: Final answer
    x = 5,978.92

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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.