Home / 15,459.96-21,345.84-9,499.62

Finding the Fourth Proportional to 15,459.96, 21,345.84 and 9,499.62

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Solution

The fourth proportional to 15,459.96, 21,345.84 and 9,499.62 is: 13,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.96 : 21,345.84 = 9,499.62 : x
  2. Step 2: Convert to fraction form
    15,459.96/21,345.84 = 9,499.62/x
  3. Step 3: Cross multiply
    15,459.96x = 21,345.84 × 9,499.62
  4. Step 4: Simplify right side
    15,459.96x = 202,777,368.58
  5. Step 5: Solve for x
    x = 202,777,368.58/15,459.96
  6. Step 6: Final answer
    x = 13,116.29

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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.