Home / 21,035.31-29,028.81-11,475.40

Finding the Fourth Proportional to 21,035.31, 29,028.81 and 11,475.40

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Solution

The fourth proportional to 21,035.31, 29,028.81 and 11,475.40 is: 15,836.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.31 : 29,028.81 = 11,475.40 : x
  2. Step 2: Convert to fraction form
    21,035.31/29,028.81 = 11,475.40/x
  3. Step 3: Cross multiply
    21,035.31x = 29,028.81 × 11,475.40
  4. Step 4: Simplify right side
    21,035.31x = 333,117,166.61
  5. Step 5: Solve for x
    x = 333,117,166.61/21,035.31
  6. Step 6: Final answer
    x = 15,836.10

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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.