Home / 15,459.09-21,333.92-9,171.51

Finding the Fourth Proportional to 15,459.09, 21,333.92 and 9,171.51

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Solution

The fourth proportional to 15,459.09, 21,333.92 and 9,171.51 is: 12,656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.09 : 21,333.92 = 9,171.51 : x
  2. Step 2: Convert to fraction form
    15,459.09/21,333.92 = 9,171.51/x
  3. Step 3: Cross multiply
    15,459.09x = 21,333.92 × 9,171.51
  4. Step 4: Simplify right side
    15,459.09x = 195,664,214.76
  5. Step 5: Solve for x
    x = 195,664,214.76/15,459.09
  6. Step 6: Final answer
    x = 12,656.90

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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.