Home / 15,878.07-21,901.74-10,220.22

Finding the Fourth Proportional to 15,878.07, 21,901.74 and 10,220.22

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Solution

The fourth proportional to 15,878.07, 21,901.74 and 10,220.22 is: 14,097.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,878.07 : 21,901.74 = 10,220.22 : x
  2. Step 2: Convert to fraction form
    15,878.07/21,901.74 = 10,220.22/x
  3. Step 3: Cross multiply
    15,878.07x = 21,901.74 × 10,220.22
  4. Step 4: Simplify right side
    15,878.07x = 223,840,601.18
  5. Step 5: Solve for x
    x = 223,840,601.18/15,878.07
  6. Step 6: Final answer
    x = 14,097.47

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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.