Home / 13,878,003.20-20,817,004.80-12,508,066.40

Finding the Fourth Proportional to 13,878,003.20, 20,817,004.80 and 12,508,066.40

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Solution

The fourth proportional to 13,878,003.20, 20,817,004.80 and 12,508,066.40 is: 18,762,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878,003.20 : 20,817,004.80 = 12,508,066.40 : x
  2. Step 2: Convert to fraction form
    13,878,003.20/20,817,004.80 = 12,508,066.40/x
  3. Step 3: Cross multiply
    13,878,003.20x = 20,817,004.80 × 12,508,066.40
  4. Step 4: Simplify right side
    13,878,003.20x = 260,380,478,287,518.75
  5. Step 5: Solve for x
    x = 260,380,478,287,518.75/13,878,003.20
  6. Step 6: Final answer
    x = 18,762,099.60

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Similar ratio
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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.