Home / 15,447.51-21,309.35-9,399.60

Finding the Fourth Proportional to 15,447.51, 21,309.35 and 9,399.60

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Solution

The fourth proportional to 15,447.51, 21,309.35 and 9,399.60 is: 12,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.51 : 21,309.35 = 9,399.60 : x
  2. Step 2: Convert to fraction form
    15,447.51/21,309.35 = 9,399.60/x
  3. Step 3: Cross multiply
    15,447.51x = 21,309.35 × 9,399.60
  4. Step 4: Simplify right side
    15,447.51x = 200,299,319.26
  5. Step 5: Solve for x
    x = 200,299,319.26/15,447.51
  6. Step 6: Final answer
    x = 12,966.45

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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.