Home / 19,830.24-27,366.10-10,878.20

Finding the Fourth Proportional to 19,830.24, 27,366.10 and 10,878.20

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Solution

The fourth proportional to 19,830.24, 27,366.10 and 10,878.20 is: 15,012.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,830.24 : 27,366.10 = 10,878.20 : x
  2. Step 2: Convert to fraction form
    19,830.24/27,366.10 = 10,878.20/x
  3. Step 3: Cross multiply
    19,830.24x = 27,366.10 × 10,878.20
  4. Step 4: Simplify right side
    19,830.24x = 297,693,854.63
  5. Step 5: Solve for x
    x = 297,693,854.63/19,830.24
  6. Step 6: Final answer
    x = 15,012.12

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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.