Home / 19,686,648.80-29,529,973.20-12,088,978.40

Finding the Fourth Proportional to 19,686,648.80, 29,529,973.20 and 12,088,978.40

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Solution

The fourth proportional to 19,686,648.80, 29,529,973.20 and 12,088,978.40 is: 18,133,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,686,648.80 : 29,529,973.20 = 12,088,978.40 : x
  2. Step 2: Convert to fraction form
    19,686,648.80/29,529,973.20 = 12,088,978.40/x
  3. Step 3: Cross multiply
    19,686,648.80x = 29,529,973.20 × 12,088,978.40
  4. Step 4: Simplify right side
    19,686,648.80x = 356,987,208,167,378.88
  5. Step 5: Solve for x
    x = 356,987,208,167,378.88/19,686,648.80
  6. Step 6: Final answer
    x = 18,133,467.60

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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.