Home / 11,821.04-16,312.86-6,515.74

Finding the Fourth Proportional to 11,821.04, 16,312.86 and 6,515.74

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Solution

The fourth proportional to 11,821.04, 16,312.86 and 6,515.74 is: 8,991.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.04 : 16,312.86 = 6,515.74 : x
  2. Step 2: Convert to fraction form
    11,821.04/16,312.86 = 6,515.74/x
  3. Step 3: Cross multiply
    11,821.04x = 16,312.86 × 6,515.74
  4. Step 4: Simplify right side
    11,821.04x = 106,290,374.81
  5. Step 5: Solve for x
    x = 106,290,374.81/11,821.04
  6. Step 6: Final answer
    x = 8,991.63

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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.