Home / 15,739.06-21,719.74-8,665.34

Finding the Fourth Proportional to 15,739.06, 21,719.74 and 8,665.34

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Solution

The fourth proportional to 15,739.06, 21,719.74 and 8,665.34 is: 11,958.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,739.06 : 21,719.74 = 8,665.34 : x
  2. Step 2: Convert to fraction form
    15,739.06/21,719.74 = 8,665.34/x
  3. Step 3: Cross multiply
    15,739.06x = 21,719.74 × 8,665.34
  4. Step 4: Simplify right side
    15,739.06x = 188,208,931.81
  5. Step 5: Solve for x
    x = 188,208,931.81/15,739.06
  6. Step 6: Final answer
    x = 11,958.08

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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.