Home / 15,172.89-20,928.81-10,068.29

Finding the Fourth Proportional to 15,172.89, 20,928.81 and 10,068.29

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Solution

The fourth proportional to 15,172.89, 20,928.81 and 10,068.29 is: 13,887.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.89 : 20,928.81 = 10,068.29 : x
  2. Step 2: Convert to fraction form
    15,172.89/20,928.81 = 10,068.29/x
  3. Step 3: Cross multiply
    15,172.89x = 20,928.81 × 10,068.29
  4. Step 4: Simplify right side
    15,172.89x = 210,717,328.43
  5. Step 5: Solve for x
    x = 210,717,328.43/15,172.89
  6. Step 6: Final answer
    x = 13,887.75

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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.