Home / 18,723,611.20-28,085,416.80-9,134,053.60

Finding the Fourth Proportional to 18,723,611.20, 28,085,416.80 and 9,134,053.60

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Solution

The fourth proportional to 18,723,611.20, 28,085,416.80 and 9,134,053.60 is: 13,701,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723,611.20 : 28,085,416.80 = 9,134,053.60 : x
  2. Step 2: Convert to fraction form
    18,723,611.20/28,085,416.80 = 9,134,053.60/x
  3. Step 3: Cross multiply
    18,723,611.20x = 28,085,416.80 × 9,134,053.60
  4. Step 4: Simplify right side
    18,723,611.20x = 256,533,702,429,540.47
  5. Step 5: Solve for x
    x = 256,533,702,429,540.47/18,723,611.20
  6. Step 6: Final answer
    x = 13,701,080.40

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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.