Home / 19,901.58-27,454.99-12,830.28

Finding the Fourth Proportional to 19,901.58, 27,454.99 and 12,830.28

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Solution

The fourth proportional to 19,901.58, 27,454.99 and 12,830.28 is: 17,699.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,901.58 : 27,454.99 = 12,830.28 : x
  2. Step 2: Convert to fraction form
    19,901.58/27,454.99 = 12,830.28/x
  3. Step 3: Cross multiply
    19,901.58x = 27,454.99 × 12,830.28
  4. Step 4: Simplify right side
    19,901.58x = 352,255,209.10
  5. Step 5: Solve for x
    x = 352,255,209.10/19,901.58
  6. Step 6: Final answer
    x = 17,699.86

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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.