Home / 20,711,969-31,068,395.76-5,359,588.64

Finding the Fourth Proportional to 20,711,969, 31,068,395.76 and 5,359,588.64

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Solution

The fourth proportional to 20,711,969, 31,068,395.76 and 5,359,588.64 is: 8,039,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711,969 : 31,068,395.76 = 5,359,588.64 : x
  2. Step 2: Convert to fraction form
    20,711,969/31,068,395.76 = 5,359,588.64/x
  3. Step 3: Cross multiply
    20,711,969x = 31,068,395.76 × 5,359,588.64
  4. Step 4: Simplify right side
    20,711,969x = 166,513,820,978,320.16
  5. Step 5: Solve for x
    x = 166,513,820,978,320.16/20,711,969
  6. Step 6: Final answer
    x = 8,039,497.40

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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.