Home / 12,138,421.60-18,214,630.80-4,570,818.40

Finding the Fourth Proportional to 12,138,421.60, 18,214,630.80 and 4,570,818.40

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Solution

The fourth proportional to 12,138,421.60, 18,214,630.80 and 4,570,818.40 is: 6,858,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138,421.60 : 18,214,630.80 = 4,570,818.40 : x
  2. Step 2: Convert to fraction form
    12,138,421.60/18,214,630.80 = 4,570,818.40/x
  3. Step 3: Cross multiply
    12,138,421.60x = 18,214,630.80 × 4,570,818.40
  4. Step 4: Simplify right side
    12,138,421.60x = 83,255,769,609,846.73
  5. Step 5: Solve for x
    x = 83,255,769,609,846.73/12,138,421.60
  6. Step 6: Final answer
    x = 6,858,862.90

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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.