Home / 12,225.81-16,870.28-6,919.57

Finding the Fourth Proportional to 12,225.81, 16,870.28 and 6,919.57

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Solution

The fourth proportional to 12,225.81, 16,870.28 and 6,919.57 is: 9,548.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.81 : 16,870.28 = 6,919.57 : x
  2. Step 2: Convert to fraction form
    12,225.81/16,870.28 = 6,919.57/x
  3. Step 3: Cross multiply
    12,225.81x = 16,870.28 × 6,919.57
  4. Step 4: Simplify right side
    12,225.81x = 116,735,083.38
  5. Step 5: Solve for x
    x = 116,735,083.38/12,225.81
  6. Step 6: Final answer
    x = 9,548.25

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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.