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Finding the Fourth Proportional to 10,485.01, 15,727.50 and 7,188.11

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Solution

The fourth proportional to 10,485.01, 15,727.50 and 7,188.11 is: 10,782.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,485.01 : 15,727.50 = 7,188.11 : x
  2. Step 2: Convert to fraction form
    10,485.01/15,727.50 = 7,188.11/x
  3. Step 3: Cross multiply
    10,485.01x = 15,727.50 × 7,188.11
  4. Step 4: Simplify right side
    10,485.01x = 113,050,980.37
  5. Step 5: Solve for x
    x = 113,050,980.37/10,485.01
  6. Step 6: Final answer
    x = 10,782.15

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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.