Home / 15,433.58-21,300.08-8,719.64

Finding the Fourth Proportional to 15,433.58, 21,300.08 and 8,719.64

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Solution

The fourth proportional to 15,433.58, 21,300.08 and 8,719.64 is: 12,034.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,433.58 : 21,300.08 = 8,719.64 : x
  2. Step 2: Convert to fraction form
    15,433.58/21,300.08 = 8,719.64/x
  3. Step 3: Cross multiply
    15,433.58x = 21,300.08 × 8,719.64
  4. Step 4: Simplify right side
    15,433.58x = 185,728,959.35
  5. Step 5: Solve for x
    x = 185,728,959.35/15,433.58
  6. Step 6: Final answer
    x = 12,034.08

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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.