Home / 15,728.95-21,705.91-9,014.28

Finding the Fourth Proportional to 15,728.95, 21,705.91 and 9,014.28

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Solution

The fourth proportional to 15,728.95, 21,705.91 and 9,014.28 is: 12,439.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.95 : 21,705.91 = 9,014.28 : x
  2. Step 2: Convert to fraction form
    15,728.95/21,705.91 = 9,014.28/x
  3. Step 3: Cross multiply
    15,728.95x = 21,705.91 × 9,014.28
  4. Step 4: Simplify right side
    15,728.95x = 195,663,150.39
  5. Step 5: Solve for x
    x = 195,663,150.39/15,728.95
  6. Step 6: Final answer
    x = 12,439.68

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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.