Home / 10,385.40-14,331.78-5,669.58

Finding the Fourth Proportional to 10,385.40, 14,331.78 and 5,669.58

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Solution

The fourth proportional to 10,385.40, 14,331.78 and 5,669.58 is: 7,823.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.40 : 14,331.78 = 5,669.58 : x
  2. Step 2: Convert to fraction form
    10,385.40/14,331.78 = 5,669.58/x
  3. Step 3: Cross multiply
    10,385.40x = 14,331.78 × 5,669.58
  4. Step 4: Simplify right side
    10,385.40x = 81,255,173.25
  5. Step 5: Solve for x
    x = 81,255,173.25/10,385.40
  6. Step 6: Final answer
    x = 7,823.98

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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.