Home / 19,897.31-27,458.15-11,285.13

Finding the Fourth Proportional to 19,897.31, 27,458.15 and 11,285.13

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Solution

The fourth proportional to 19,897.31, 27,458.15 and 11,285.13 is: 15,573.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,897.31 : 27,458.15 = 11,285.13 : x
  2. Step 2: Convert to fraction form
    19,897.31/27,458.15 = 11,285.13/x
  3. Step 3: Cross multiply
    19,897.31x = 27,458.15 × 11,285.13
  4. Step 4: Simplify right side
    19,897.31x = 309,868,889.17
  5. Step 5: Solve for x
    x = 309,868,889.17/19,897.31
  6. Step 6: Final answer
    x = 15,573.40

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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.