Home / 19,878.36-27,431.60-10,925.87

Finding the Fourth Proportional to 19,878.36, 27,431.60 and 10,925.87

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Solution

The fourth proportional to 19,878.36, 27,431.60 and 10,925.87 is: 15,077.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.36 : 27,431.60 = 10,925.87 : x
  2. Step 2: Convert to fraction form
    19,878.36/27,431.60 = 10,925.87/x
  3. Step 3: Cross multiply
    19,878.36x = 27,431.60 × 10,925.87
  4. Step 4: Simplify right side
    19,878.36x = 299,713,903.70
  5. Step 5: Solve for x
    x = 299,713,903.70/19,878.36
  6. Step 6: Final answer
    x = 15,077.40

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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.