Home / 15,445,971.70-21,314,031.84-9,165,416.42

Finding the Fourth Proportional to 15,445,971.70, 21,314,031.84 and 9,165,416.42

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Solution

The fourth proportional to 15,445,971.70, 21,314,031.84 and 9,165,416.42 is: 12,647,438.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445,971.70 : 21,314,031.84 = 9,165,416.42 : x
  2. Step 2: Convert to fraction form
    15,445,971.70/21,314,031.84 = 9,165,416.42/x
  3. Step 3: Cross multiply
    15,445,971.70x = 21,314,031.84 × 9,165,416.42
  4. Step 4: Simplify right side
    15,445,971.70x = 195,351,977,402,738.81
  5. Step 5: Solve for x
    x = 195,351,977,402,738.81/15,445,971.70
  6. Step 6: Final answer
    x = 12,647,438.52

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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.