Home / 21,099.14-31,656.02-7,955.28

Finding the Fourth Proportional to 21,099.14, 31,656.02 and 7,955.28

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Solution

The fourth proportional to 21,099.14, 31,656.02 and 7,955.28 is: 11,935.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.14 : 31,656.02 = 7,955.28 : x
  2. Step 2: Convert to fraction form
    21,099.14/31,656.02 = 7,955.28/x
  3. Step 3: Cross multiply
    21,099.14x = 31,656.02 × 7,955.28
  4. Step 4: Simplify right side
    21,099.14x = 251,832,502.79
  5. Step 5: Solve for x
    x = 251,832,502.79/21,099.14
  6. Step 6: Final answer
    x = 11,935.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.