Home / 18,720,941.60-28,081,412.40-9,142,464.80

Finding the Fourth Proportional to 18,720,941.60, 28,081,412.40 and 9,142,464.80

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Solution

The fourth proportional to 18,720,941.60, 28,081,412.40 and 9,142,464.80 is: 13,713,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720,941.60 : 28,081,412.40 = 9,142,464.80 : x
  2. Step 2: Convert to fraction form
    18,720,941.60/28,081,412.40 = 9,142,464.80/x
  3. Step 3: Cross multiply
    18,720,941.60x = 28,081,412.40 × 9,142,464.80
  4. Step 4: Simplify right side
    18,720,941.60x = 256,733,324,401,283.53
  5. Step 5: Solve for x
    x = 256,733,324,401,283.53/18,720,941.60
  6. Step 6: Final answer
    x = 13,713,697.20

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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.