Home / 9,919.31-13,688.64-5,670.46

Finding the Fourth Proportional to 9,919.31, 13,688.64 and 5,670.46

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Solution

The fourth proportional to 9,919.31, 13,688.64 and 5,670.46 is: 7,825.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.31 : 13,688.64 = 5,670.46 : x
  2. Step 2: Convert to fraction form
    9,919.31/13,688.64 = 5,670.46/x
  3. Step 3: Cross multiply
    9,919.31x = 13,688.64 × 5,670.46
  4. Step 4: Simplify right side
    9,919.31x = 77,620,851.35
  5. Step 5: Solve for x
    x = 77,620,851.35/9,919.31
  6. Step 6: Final answer
    x = 7,825.23

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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.