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Finding the Fourth Proportional to 10,628.53, 16,014.80 and 8,820.16

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Solution

The fourth proportional to 10,628.53, 16,014.80 and 8,820.16 is: 13,289.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,628.53 : 16,014.80 = 8,820.16 : x
  2. Step 2: Convert to fraction form
    10,628.53/16,014.80 = 8,820.16/x
  3. Step 3: Cross multiply
    10,628.53x = 16,014.80 × 8,820.16
  4. Step 4: Simplify right side
    10,628.53x = 141,253,030.77
  5. Step 5: Solve for x
    x = 141,253,030.77/10,628.53
  6. Step 6: Final answer
    x = 13,289.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.