Home / 15,353.57-21,187.60-8,547.55

Finding the Fourth Proportional to 15,353.57, 21,187.60 and 8,547.55

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Solution

The fourth proportional to 15,353.57, 21,187.60 and 8,547.55 is: 11,795.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,353.57 : 21,187.60 = 8,547.55 : x
  2. Step 2: Convert to fraction form
    15,353.57/21,187.60 = 8,547.55/x
  3. Step 3: Cross multiply
    15,353.57x = 21,187.60 × 8,547.55
  4. Step 4: Simplify right side
    15,353.57x = 181,101,996.04
  5. Step 5: Solve for x
    x = 181,101,996.04/15,353.57
  6. Step 6: Final answer
    x = 11,795.43

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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.