Home / 19,920,792.60-29,881,188.90-18,220,181.40

Finding the Fourth Proportional to 19,920,792.60, 29,881,188.90 and 18,220,181.40

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Solution

The fourth proportional to 19,920,792.60, 29,881,188.90 and 18,220,181.40 is: 27,330,272.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920,792.60 : 29,881,188.90 = 18,220,181.40 : x
  2. Step 2: Convert to fraction form
    19,920,792.60/29,881,188.90 = 18,220,181.40/x
  3. Step 3: Cross multiply
    19,920,792.60x = 29,881,188.90 × 18,220,181.40
  4. Step 4: Simplify right side
    19,920,792.60x = 544,440,682,205,666.38
  5. Step 5: Solve for x
    x = 544,440,682,205,666.38/19,920,792.60
  6. Step 6: Final answer
    x = 27,330,272.10

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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.