Home / 21,048.84-31,418.28-19,295.52

Finding the Fourth Proportional to 21,048.84, 31,418.28 and 19,295.52

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Solution

The fourth proportional to 21,048.84, 31,418.28 and 19,295.52 is: 28,801.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,048.84 : 31,418.28 = 19,295.52 : x
  2. Step 2: Convert to fraction form
    21,048.84/31,418.28 = 19,295.52/x
  3. Step 3: Cross multiply
    21,048.84x = 31,418.28 × 19,295.52
  4. Step 4: Simplify right side
    21,048.84x = 606,232,050.11
  5. Step 5: Solve for x
    x = 606,232,050.11/21,048.84
  6. Step 6: Final answer
    x = 28,801.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.