Home / 13,280,021.70-19,920,032.55-12,720,149.70

Finding the Fourth Proportional to 13,280,021.70, 19,920,032.55 and 12,720,149.70

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Solution

The fourth proportional to 13,280,021.70, 19,920,032.55 and 12,720,149.70 is: 19,080,224.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280,021.70 : 19,920,032.55 = 12,720,149.70 : x
  2. Step 2: Convert to fraction form
    13,280,021.70/19,920,032.55 = 12,720,149.70/x
  3. Step 3: Cross multiply
    13,280,021.70x = 19,920,032.55 × 12,720,149.70
  4. Step 4: Simplify right side
    13,280,021.70x = 253,385,796,064,872.72
  5. Step 5: Solve for x
    x = 253,385,796,064,872.72/13,280,021.70
  6. Step 6: Final answer
    x = 19,080,224.55

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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.