Home / 12,163.81-16,787.67-7,130.01

Finding the Fourth Proportional to 12,163.81, 16,787.67 and 7,130.01

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Solution

The fourth proportional to 12,163.81, 16,787.67 and 7,130.01 is: 9,840.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.81 : 16,787.67 = 7,130.01 : x
  2. Step 2: Convert to fraction form
    12,163.81/16,787.67 = 7,130.01/x
  3. Step 3: Cross multiply
    12,163.81x = 16,787.67 × 7,130.01
  4. Step 4: Simplify right side
    12,163.81x = 119,696,254.98
  5. Step 5: Solve for x
    x = 119,696,254.98/12,163.81
  6. Step 6: Final answer
    x = 9,840.36

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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.