Home / 10,356.41-14,291.87-5,640.72

Finding the Fourth Proportional to 10,356.41, 14,291.87 and 5,640.72

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Solution

The fourth proportional to 10,356.41, 14,291.87 and 5,640.72 is: 7,784.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,356.41 : 14,291.87 = 5,640.72 : x
  2. Step 2: Convert to fraction form
    10,356.41/14,291.87 = 5,640.72/x
  3. Step 3: Cross multiply
    10,356.41x = 14,291.87 × 5,640.72
  4. Step 4: Simplify right side
    10,356.41x = 80,616,408.74
  5. Step 5: Solve for x
    x = 80,616,408.74/10,356.41
  6. Step 6: Final answer
    x = 7,784.21

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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.