Home / 12,872,021.10-19,280,038.05-7,814,510.70

Finding the Fourth Proportional to 12,872,021.10, 19,280,038.05 and 7,814,510.70

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Solution

The fourth proportional to 12,872,021.10, 19,280,038.05 and 7,814,510.70 is: 11,704,771.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872,021.10 : 19,280,038.05 = 7,814,510.70 : x
  2. Step 2: Convert to fraction form
    12,872,021.10/19,280,038.05 = 7,814,510.70/x
  3. Step 3: Cross multiply
    12,872,021.10x = 19,280,038.05 × 7,814,510.70
  4. Step 4: Simplify right side
    12,872,021.10x = 150,664,063,638,132.16
  5. Step 5: Solve for x
    x = 150,664,063,638,132.16/12,872,021.10
  6. Step 6: Final answer
    x = 11,704,771.34

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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.