Home / 15,717.92-21,557.84-13,946.45

Finding the Fourth Proportional to 15,717.92, 21,557.84 and 13,946.45

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Solution

The fourth proportional to 15,717.92, 21,557.84 and 13,946.45 is: 19,128.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,717.92 : 21,557.84 = 13,946.45 : x
  2. Step 2: Convert to fraction form
    15,717.92/21,557.84 = 13,946.45/x
  3. Step 3: Cross multiply
    15,717.92x = 21,557.84 × 13,946.45
  4. Step 4: Simplify right side
    15,717.92x = 300,655,267.94
  5. Step 5: Solve for x
    x = 300,655,267.94/15,717.92
  6. Step 6: Final answer
    x = 19,128.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.