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Finding the Fourth Proportional to 8,700.55, 13,029.93 and 7,208.70

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Solution

The fourth proportional to 8,700.55, 13,029.93 and 7,208.70 is: 10,795.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.55 : 13,029.93 = 7,208.70 : x
  2. Step 2: Convert to fraction form
    8,700.55/13,029.93 = 7,208.70/x
  3. Step 3: Cross multiply
    8,700.55x = 13,029.93 × 7,208.70
  4. Step 4: Simplify right side
    8,700.55x = 93,928,807.53
  5. Step 5: Solve for x
    x = 93,928,807.53/8,700.55
  6. Step 6: Final answer
    x = 10,795.74

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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.