Home / 15,869.28-21,899.60-9,580.32

Finding the Fourth Proportional to 15,869.28, 21,899.60 and 9,580.32

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Solution

The fourth proportional to 15,869.28, 21,899.60 and 9,580.32 is: 13,220.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.28 : 21,899.60 = 9,580.32 : x
  2. Step 2: Convert to fraction form
    15,869.28/21,899.60 = 9,580.32/x
  3. Step 3: Cross multiply
    15,869.28x = 21,899.60 × 9,580.32
  4. Step 4: Simplify right side
    15,869.28x = 209,805,175.87
  5. Step 5: Solve for x
    x = 209,805,175.87/15,869.28
  6. Step 6: Final answer
    x = 13,220.84

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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.