Home / 15,490,972.80-21,377,817.12-8,615,457.84

Finding the Fourth Proportional to 15,490,972.80, 21,377,817.12 and 8,615,457.84

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Solution

The fourth proportional to 15,490,972.80, 21,377,817.12 and 8,615,457.84 is: 11,889,484.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490,972.80 : 21,377,817.12 = 8,615,457.84 : x
  2. Step 2: Convert to fraction form
    15,490,972.80/21,377,817.12 = 8,615,457.84/x
  3. Step 3: Cross multiply
    15,490,972.80x = 21,377,817.12 × 8,615,457.84
  4. Step 4: Simplify right side
    15,490,972.80x = 184,179,682,108,590.22
  5. Step 5: Solve for x
    x = 184,179,682,108,590.22/15,490,972.80
  6. Step 6: Final answer
    x = 11,889,484.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.