Home / 12,928,048.80-19,354,748.40-7,889,200.80

Finding the Fourth Proportional to 12,928,048.80, 19,354,748.40 and 7,889,200.80

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Solution

The fourth proportional to 12,928,048.80, 19,354,748.40 and 7,889,200.80 is: 11,811,024.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928,048.80 : 19,354,748.40 = 7,889,200.80 : x
  2. Step 2: Convert to fraction form
    12,928,048.80/19,354,748.40 = 7,889,200.80/x
  3. Step 3: Cross multiply
    12,928,048.80x = 19,354,748.40 × 7,889,200.80
  4. Step 4: Simplify right side
    12,928,048.80x = 152,693,496,561,078.72
  5. Step 5: Solve for x
    x = 152,693,496,561,078.72/12,928,048.80
  6. Step 6: Final answer
    x = 11,811,024.15

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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.