Home / 15,174,529,057.42-20,941,098,019.81-8,307,811,128.86

Finding the Fourth Proportional to 15,174,529,057.42, 20,941,098,019.81 and 8,307,811,128.86

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Solution

The fourth proportional to 15,174,529,057.42, 20,941,098,019.81 and 8,307,811,128.86 is: 11,464,915,090.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174,529,057.42 : 20,941,098,019.81 = 8,307,811,128.86 : x
  2. Step 2: Convert to fraction form
    15,174,529,057.42/20,941,098,019.81 = 8,307,811,128.86/x
  3. Step 3: Cross multiply
    15,174,529,057.42x = 20,941,098,019.81 × 8,307,811,128.86
  4. Step 4: Simplify right side
    15,174,529,057.42x = 173,974,687,179,525,619,712
  5. Step 5: Solve for x
    x = 173,974,687,179,525,619,712/15,174,529,057.42
  6. Step 6: Final answer
    x = 11,464,915,090.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.