Home / 21,112,170.56-31,668,255.84-12,130,994.24

Finding the Fourth Proportional to 21,112,170.56, 31,668,255.84 and 12,130,994.24

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Solution

The fourth proportional to 21,112,170.56, 31,668,255.84 and 12,130,994.24 is: 18,196,491.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112,170.56 : 31,668,255.84 = 12,130,994.24 : x
  2. Step 2: Convert to fraction form
    21,112,170.56/31,668,255.84 = 12,130,994.24/x
  3. Step 3: Cross multiply
    21,112,170.56x = 31,668,255.84 × 12,130,994.24
  4. Step 4: Simplify right side
    21,112,170.56x = 384,167,429,185,886.38
  5. Step 5: Solve for x
    x = 384,167,429,185,886.38/21,112,170.56
  6. Step 6: Final answer
    x = 18,196,491.36

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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.