Home / 12,386.02-18,579.64-4,989.49

Finding the Fourth Proportional to 12,386.02, 18,579.64 and 4,989.49

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Solution

The fourth proportional to 12,386.02, 18,579.64 and 4,989.49 is: 7,484.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.02 : 18,579.64 = 4,989.49 : x
  2. Step 2: Convert to fraction form
    12,386.02/18,579.64 = 4,989.49/x
  3. Step 3: Cross multiply
    12,386.02x = 18,579.64 × 4,989.49
  4. Step 4: Simplify right side
    12,386.02x = 92,702,927.98
  5. Step 5: Solve for x
    x = 92,702,927.98/12,386.02
  6. Step 6: Final answer
    x = 7,484.48

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1.5x scale

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.