Home / 10,356.06-14,291.40-5,640.35

Finding the Fourth Proportional to 10,356.06, 14,291.40 and 5,640.35

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Solution

The fourth proportional to 10,356.06, 14,291.40 and 5,640.35 is: 7,783.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,356.06 : 14,291.40 = 5,640.35 : x
  2. Step 2: Convert to fraction form
    10,356.06/14,291.40 = 5,640.35/x
  3. Step 3: Cross multiply
    10,356.06x = 14,291.40 × 5,640.35
  4. Step 4: Simplify right side
    10,356.06x = 80,608,415.96
  5. Step 5: Solve for x
    x = 80,608,415.96/10,356.06
  6. Step 6: Final answer
    x = 7,783.69

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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.