Home / 15,459.56-21,327.18-9,489.05

Finding the Fourth Proportional to 15,459.56, 21,327.18 and 9,489.05

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Solution

The fourth proportional to 15,459.56, 21,327.18 and 9,489.05 is: 13,090.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.56 : 21,327.18 = 9,489.05 : x
  2. Step 2: Convert to fraction form
    15,459.56/21,327.18 = 9,489.05/x
  3. Step 3: Cross multiply
    15,459.56x = 21,327.18 × 9,489.05
  4. Step 4: Simplify right side
    15,459.56x = 202,374,570.74
  5. Step 5: Solve for x
    x = 202,374,570.74/15,459.56
  6. Step 6: Final answer
    x = 13,090.58

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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.