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Finding the Fourth Proportional to 9,862.21, 14,803.85 and 8,815.69

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Solution

The fourth proportional to 9,862.21, 14,803.85 and 8,815.69 is: 13,232.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,862.21 : 14,803.85 = 8,815.69 : x
  2. Step 2: Convert to fraction form
    9,862.21/14,803.85 = 8,815.69/x
  3. Step 3: Cross multiply
    9,862.21x = 14,803.85 × 8,815.69
  4. Step 4: Simplify right side
    9,862.21x = 130,506,152.41
  5. Step 5: Solve for x
    x = 130,506,152.41/9,862.21
  6. Step 6: Final answer
    x = 13,232.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.