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Finding the Fourth Proportional to 16,642,485.60, 24,963,728.40 and 13,619,176.80

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Solution

The fourth proportional to 16,642,485.60, 24,963,728.40 and 13,619,176.80 is: 20,428,765.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,642,485.60 : 24,963,728.40 = 13,619,176.80 : x
  2. Step 2: Convert to fraction form
    16,642,485.60/24,963,728.40 = 13,619,176.80/x
  3. Step 3: Cross multiply
    16,642,485.60x = 24,963,728.40 × 13,619,176.80
  4. Step 4: Simplify right side
    16,642,485.60x = 339,985,430,666,781.12
  5. Step 5: Solve for x
    x = 339,985,430,666,781.12/16,642,485.60
  6. Step 6: Final answer
    x = 20,428,765.20

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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.