Home / 19,878.58-27,434.91-11,495.08

Finding the Fourth Proportional to 19,878.58, 27,434.91 and 11,495.08

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Solution

The fourth proportional to 19,878.58, 27,434.91 and 11,495.08 is: 15,864.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.58 : 27,434.91 = 11,495.08 : x
  2. Step 2: Convert to fraction form
    19,878.58/27,434.91 = 11,495.08/x
  3. Step 3: Cross multiply
    19,878.58x = 27,434.91 × 11,495.08
  4. Step 4: Simplify right side
    19,878.58x = 315,366,485.24
  5. Step 5: Solve for x
    x = 315,366,485.24/19,878.58
  6. Step 6: Final answer
    x = 15,864.64

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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.