Home / 12,386.47-18,580.32-4,989.93

Finding the Fourth Proportional to 12,386.47, 18,580.32 and 4,989.93

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Solution

The fourth proportional to 12,386.47, 18,580.32 and 4,989.93 is: 7,485.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.47 : 18,580.32 = 4,989.93 : x
  2. Step 2: Convert to fraction form
    12,386.47/18,580.32 = 4,989.93/x
  3. Step 3: Cross multiply
    12,386.47x = 18,580.32 × 4,989.93
  4. Step 4: Simplify right side
    12,386.47x = 92,714,496.18
  5. Step 5: Solve for x
    x = 92,714,496.18/12,386.47
  6. Step 6: Final answer
    x = 7,485.14

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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.