Home / 10,821.28-14,931.88-6,040.64

Finding the Fourth Proportional to 10,821.28, 14,931.88 and 6,040.64

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Solution

The fourth proportional to 10,821.28, 14,931.88 and 6,040.64 is: 8,335.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.28 : 14,931.88 = 6,040.64 : x
  2. Step 2: Convert to fraction form
    10,821.28/14,931.88 = 6,040.64/x
  3. Step 3: Cross multiply
    10,821.28x = 14,931.88 × 6,040.64
  4. Step 4: Simplify right side
    10,821.28x = 90,198,111.60
  5. Step 5: Solve for x
    x = 90,198,111.60/10,821.28
  6. Step 6: Final answer
    x = 8,335.25

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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.