Home / 14,001.31-21,001.98-13,145.95

Finding the Fourth Proportional to 14,001.31, 21,001.98 and 13,145.95

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Solution

The fourth proportional to 14,001.31, 21,001.98 and 13,145.95 is: 19,718.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.31 : 21,001.98 = 13,145.95 : x
  2. Step 2: Convert to fraction form
    14,001.31/21,001.98 = 13,145.95/x
  3. Step 3: Cross multiply
    14,001.31x = 21,001.98 × 13,145.95
  4. Step 4: Simplify right side
    14,001.31x = 276,090,978.98
  5. Step 5: Solve for x
    x = 276,090,978.98/14,001.31
  6. Step 6: Final answer
    x = 19,718.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.