Home / 28,158,034.50-38,858,087.70-15,280,978.50

Finding the Fourth Proportional to 28,158,034.50, 38,858,087.70 and 15,280,978.50

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Solution

The fourth proportional to 28,158,034.50, 38,858,087.70 and 15,280,978.50 is: 21,087,750.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158,034.50 : 38,858,087.70 = 15,280,978.50 : x
  2. Step 2: Convert to fraction form
    28,158,034.50/38,858,087.70 = 15,280,978.50/x
  3. Step 3: Cross multiply
    28,158,034.50x = 38,858,087.70 × 15,280,978.50
  4. Step 4: Simplify right side
    28,158,034.50x = 593,789,602,694,814.50
  5. Step 5: Solve for x
    x = 593,789,602,694,814.50/28,158,034.50
  6. Step 6: Final answer
    x = 21,087,750.38

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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.