Home / 15,210.55-20,988.49-8,495.32

Finding the Fourth Proportional to 15,210.55, 20,988.49 and 8,495.32

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Solution

The fourth proportional to 15,210.55, 20,988.49 and 8,495.32 is: 11,722.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.55 : 20,988.49 = 8,495.32 : x
  2. Step 2: Convert to fraction form
    15,210.55/20,988.49 = 8,495.32/x
  3. Step 3: Cross multiply
    15,210.55x = 20,988.49 × 8,495.32
  4. Step 4: Simplify right side
    15,210.55x = 178,303,938.87
  5. Step 5: Solve for x
    x = 178,303,938.87/15,210.55
  6. Step 6: Final answer
    x = 11,722.39

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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.