Home / 19,880.15-27,434.67-10,928.57

Finding the Fourth Proportional to 19,880.15, 27,434.67 and 10,928.57

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Solution

The fourth proportional to 19,880.15, 27,434.67 and 10,928.57 is: 15,081.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.15 : 27,434.67 = 10,928.57 : x
  2. Step 2: Convert to fraction form
    19,880.15/27,434.67 = 10,928.57/x
  3. Step 3: Cross multiply
    19,880.15x = 27,434.67 × 10,928.57
  4. Step 4: Simplify right side
    19,880.15x = 299,821,780.11
  5. Step 5: Solve for x
    x = 299,821,780.11/19,880.15
  6. Step 6: Final answer
    x = 15,081.46

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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.