Home / 15,728.06-21,689.16-14,362.58

Finding the Fourth Proportional to 15,728.06, 21,689.16 and 14,362.58

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Solution

The fourth proportional to 15,728.06, 21,689.16 and 14,362.58 is: 19,806.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.06 : 21,689.16 = 14,362.58 : x
  2. Step 2: Convert to fraction form
    15,728.06/21,689.16 = 14,362.58/x
  3. Step 3: Cross multiply
    15,728.06x = 21,689.16 × 14,362.58
  4. Step 4: Simplify right side
    15,728.06x = 311,512,295.63
  5. Step 5: Solve for x
    x = 311,512,295.63/15,728.06
  6. Step 6: Final answer
    x = 19,806.15

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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.