Home / 18,723,009.20-28,084,513.80-15,699,700.40

Finding the Fourth Proportional to 18,723,009.20, 28,084,513.80 and 15,699,700.40

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Solution

The fourth proportional to 18,723,009.20, 28,084,513.80 and 15,699,700.40 is: 23,549,550.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723,009.20 : 28,084,513.80 = 15,699,700.40 : x
  2. Step 2: Convert to fraction form
    18,723,009.20/28,084,513.80 = 15,699,700.40/x
  3. Step 3: Cross multiply
    18,723,009.20x = 28,084,513.80 × 15,699,700.40
  4. Step 4: Simplify right side
    18,723,009.20x = 440,918,452,539,665.56
  5. Step 5: Solve for x
    x = 440,918,452,539,665.56/18,723,009.20
  6. Step 6: Final answer
    x = 23,549,550.60

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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.