Home / 15,962.81-22,028.72-8,890.64

Finding the Fourth Proportional to 15,962.81, 22,028.72 and 8,890.64

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Solution

The fourth proportional to 15,962.81, 22,028.72 and 8,890.64 is: 12,269.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,962.81 : 22,028.72 = 8,890.64 : x
  2. Step 2: Convert to fraction form
    15,962.81/22,028.72 = 8,890.64/x
  3. Step 3: Cross multiply
    15,962.81x = 22,028.72 × 8,890.64
  4. Step 4: Simplify right side
    15,962.81x = 195,849,419.18
  5. Step 5: Solve for x
    x = 195,849,419.18/15,962.81
  6. Step 6: Final answer
    x = 12,269.11

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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.