Home / 28,512,006.30-42,768,009.45-18,426,015.90

Finding the Fourth Proportional to 28,512,006.30, 42,768,009.45 and 18,426,015.90

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Solution

The fourth proportional to 28,512,006.30, 42,768,009.45 and 18,426,015.90 is: 27,639,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512,006.30 : 42,768,009.45 = 18,426,015.90 : x
  2. Step 2: Convert to fraction form
    28,512,006.30/42,768,009.45 = 18,426,015.90/x
  3. Step 3: Cross multiply
    28,512,006.30x = 42,768,009.45 × 18,426,015.90
  4. Step 4: Simplify right side
    28,512,006.30x = 788,044,022,137,050.25
  5. Step 5: Solve for x
    x = 788,044,022,137,050.25/28,512,006.30
  6. Step 6: Final answer
    x = 27,639,023.85

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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.