Home / 12,759,739.40-19,139,609.10-12,591,777.80

Finding the Fourth Proportional to 12,759,739.40, 19,139,609.10 and 12,591,777.80

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Solution

The fourth proportional to 12,759,739.40, 19,139,609.10 and 12,591,777.80 is: 18,887,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,759,739.40 : 19,139,609.10 = 12,591,777.80 : x
  2. Step 2: Convert to fraction form
    12,759,739.40/19,139,609.10 = 12,591,777.80/x
  3. Step 3: Cross multiply
    12,759,739.40x = 19,139,609.10 × 12,591,777.80
  4. Step 4: Simplify right side
    12,759,739.40x = 241,001,704,966,058
  5. Step 5: Solve for x
    x = 241,001,704,966,058/12,759,739.40
  6. Step 6: Final answer
    x = 18,887,666.70

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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.