Home / 10,490.24-15,724.34-5,285.20

Finding the Fourth Proportional to 10,490.24, 15,724.34 and 5,285.20

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Solution

The fourth proportional to 10,490.24, 15,724.34 and 5,285.20 is: 7,922.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,490.24 : 15,724.34 = 5,285.20 : x
  2. Step 2: Convert to fraction form
    10,490.24/15,724.34 = 5,285.20/x
  3. Step 3: Cross multiply
    10,490.24x = 15,724.34 × 5,285.20
  4. Step 4: Simplify right side
    10,490.24x = 83,106,281.77
  5. Step 5: Solve for x
    x = 83,106,281.77/10,490.24
  6. Step 6: Final answer
    x = 7,922.25

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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.