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Finding the Fourth Proportional to 28,014,439.46, 38,659,978.03 and 15,625,331.43

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Solution

The fourth proportional to 28,014,439.46, 38,659,978.03 and 15,625,331.43 is: 21,562,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014,439.46 : 38,659,978.03 = 15,625,331.43 : x
  2. Step 2: Convert to fraction form
    28,014,439.46/38,659,978.03 = 15,625,331.43/x
  3. Step 3: Cross multiply
    28,014,439.46x = 38,659,978.03 × 15,625,331.43
  4. Step 4: Simplify right side
    28,014,439.46x = 604,074,969,601,968.62
  5. Step 5: Solve for x
    x = 604,074,969,601,968.62/28,014,439.46
  6. Step 6: Final answer
    x = 21,562,986.14

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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.