Home / 12,420,010.60-18,630,015.90-10,435,964.20

Finding the Fourth Proportional to 12,420,010.60, 18,630,015.90 and 10,435,964.20

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Solution

The fourth proportional to 12,420,010.60, 18,630,015.90 and 10,435,964.20 is: 15,653,946.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420,010.60 : 18,630,015.90 = 10,435,964.20 : x
  2. Step 2: Convert to fraction form
    12,420,010.60/18,630,015.90 = 10,435,964.20/x
  3. Step 3: Cross multiply
    12,420,010.60x = 18,630,015.90 × 10,435,964.20
  4. Step 4: Simplify right side
    12,420,010.60x = 194,422,178,977,830.75
  5. Step 5: Solve for x
    x = 194,422,178,977,830.75/12,420,010.60
  6. Step 6: Final answer
    x = 15,653,946.30

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1.5x scale

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.