Home / 20,557.06-30,810.75-10,011.28

Finding the Fourth Proportional to 20,557.06, 30,810.75 and 10,011.28

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Solution

The fourth proportional to 20,557.06, 30,810.75 and 10,011.28 is: 15,004.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.06 : 30,810.75 = 10,011.28 : x
  2. Step 2: Convert to fraction form
    20,557.06/30,810.75 = 10,011.28/x
  3. Step 3: Cross multiply
    20,557.06x = 30,810.75 × 10,011.28
  4. Step 4: Simplify right side
    20,557.06x = 308,454,948.01
  5. Step 5: Solve for x
    x = 308,454,948.01/20,557.06
  6. Step 6: Final answer
    x = 15,004.82

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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.