Home / 12,478,641.70-18,717,962.55-7,439,793.70

Finding the Fourth Proportional to 12,478,641.70, 18,717,962.55 and 7,439,793.70

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Solution

The fourth proportional to 12,478,641.70, 18,717,962.55 and 7,439,793.70 is: 11,159,690.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,641.70 : 18,717,962.55 = 7,439,793.70 : x
  2. Step 2: Convert to fraction form
    12,478,641.70/18,717,962.55 = 7,439,793.70/x
  3. Step 3: Cross multiply
    12,478,641.70x = 18,717,962.55 × 7,439,793.70
  4. Step 4: Simplify right side
    12,478,641.70x = 139,257,779,856,325.94
  5. Step 5: Solve for x
    x = 139,257,779,856,325.94/12,478,641.70
  6. Step 6: Final answer
    x = 11,159,690.55

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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.