Home / 28,495.56-39,322.62-15,920.04

Finding the Fourth Proportional to 28,495.56, 39,322.62 and 15,920.04

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Solution

The fourth proportional to 28,495.56, 39,322.62 and 15,920.04 is: 21,968.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.56 : 39,322.62 = 15,920.04 : x
  2. Step 2: Convert to fraction form
    28,495.56/39,322.62 = 15,920.04/x
  3. Step 3: Cross multiply
    28,495.56x = 39,322.62 × 15,920.04
  4. Step 4: Simplify right side
    28,495.56x = 626,017,683.30
  5. Step 5: Solve for x
    x = 626,017,683.30/28,495.56
  6. Step 6: Final answer
    x = 21,968.96

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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.