Home / 15,004,985.30-20,706,875.63-8,129,467.36

Finding the Fourth Proportional to 15,004,985.30, 20,706,875.63 and 8,129,467.36

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Solution

The fourth proportional to 15,004,985.30, 20,706,875.63 and 8,129,467.36 is: 11,218,662.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004,985.30 : 20,706,875.63 = 8,129,467.36 : x
  2. Step 2: Convert to fraction form
    15,004,985.30/20,706,875.63 = 8,129,467.36/x
  3. Step 3: Cross multiply
    15,004,985.30x = 20,706,875.63 × 8,129,467.36
  4. Step 4: Simplify right side
    15,004,985.30x = 168,335,869,561,664.44
  5. Step 5: Solve for x
    x = 168,335,869,561,664.44/15,004,985.30
  6. Step 6: Final answer
    x = 11,218,662.74

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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.