Home / 28,255,781.60-42,320,686.80-21,831,250.40

Finding the Fourth Proportional to 28,255,781.60, 42,320,686.80 and 21,831,250.40

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Solution

The fourth proportional to 28,255,781.60, 42,320,686.80 and 21,831,250.40 is: 32,698,211.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,255,781.60 : 42,320,686.80 = 21,831,250.40 : x
  2. Step 2: Convert to fraction form
    28,255,781.60/42,320,686.80 = 21,831,250.40/x
  3. Step 3: Cross multiply
    28,255,781.60x = 42,320,686.80 × 21,831,250.40
  4. Step 4: Simplify right side
    28,255,781.60x = 923,913,510,630,774.62
  5. Step 5: Solve for x
    x = 923,913,510,630,774.62/28,255,781.60
  6. Step 6: Final answer
    x = 32,698,211.07

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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.