Home / 19,880.47-27,435.77-10,928.65

Finding the Fourth Proportional to 19,880.47, 27,435.77 and 10,928.65

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Solution

The fourth proportional to 19,880.47, 27,435.77 and 10,928.65 is: 15,081.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.47 : 27,435.77 = 10,928.65 : x
  2. Step 2: Convert to fraction form
    19,880.47/27,435.77 = 10,928.65/x
  3. Step 3: Cross multiply
    19,880.47x = 27,435.77 × 10,928.65
  4. Step 4: Simplify right side
    19,880.47x = 299,835,927.81
  5. Step 5: Solve for x
    x = 299,835,927.81/19,880.47
  6. Step 6: Final answer
    x = 15,081.93

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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.