Home / 15,331.68-21,168-10,303.38

Finding the Fourth Proportional to 15,331.68, 21,168 and 10,303.38

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Solution

The fourth proportional to 15,331.68, 21,168 and 10,303.38 is: 14,225.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.68 : 21,168 = 10,303.38 : x
  2. Step 2: Convert to fraction form
    15,331.68/21,168 = 10,303.38/x
  3. Step 3: Cross multiply
    15,331.68x = 21,168 × 10,303.38
  4. Step 4: Simplify right side
    15,331.68x = 218,101,947.84
  5. Step 5: Solve for x
    x = 218,101,947.84/15,331.68
  6. Step 6: Final answer
    x = 14,225.57

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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.