Home / 15,316,871.76-21,136,333.32-8,440,969.68

Finding the Fourth Proportional to 15,316,871.76, 21,136,333.32 and 8,440,969.68

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Solution

The fourth proportional to 15,316,871.76, 21,136,333.32 and 8,440,969.68 is: 11,648,014.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316,871.76 : 21,136,333.32 = 8,440,969.68 : x
  2. Step 2: Convert to fraction form
    15,316,871.76/21,136,333.32 = 8,440,969.68/x
  3. Step 3: Cross multiply
    15,316,871.76x = 21,136,333.32 × 8,440,969.68
  4. Step 4: Simplify right side
    15,316,871.76x = 178,411,148,700,493.72
  5. Step 5: Solve for x
    x = 178,411,148,700,493.72/15,316,871.76
  6. Step 6: Final answer
    x = 11,648,014.78

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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.