Home / 28,403,949.20-42,584,928.60-15,638,867.60

Finding the Fourth Proportional to 28,403,949.20, 42,584,928.60 and 15,638,867.60

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Solution

The fourth proportional to 28,403,949.20, 42,584,928.60 and 15,638,867.60 is: 23,446,741.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403,949.20 : 42,584,928.60 = 15,638,867.60 : x
  2. Step 2: Convert to fraction form
    28,403,949.20/42,584,928.60 = 15,638,867.60/x
  3. Step 3: Cross multiply
    28,403,949.20x = 42,584,928.60 × 15,638,867.60
  4. Step 4: Simplify right side
    28,403,949.20x = 665,980,060,130,853.38
  5. Step 5: Solve for x
    x = 665,980,060,130,853.38/28,403,949.20
  6. Step 6: Final answer
    x = 23,446,741.70

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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.