Home / 10,658,619.40-15,987,929.10-8,958,008.20

Finding the Fourth Proportional to 10,658,619.40, 15,987,929.10 and 8,958,008.20

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Solution

The fourth proportional to 10,658,619.40, 15,987,929.10 and 8,958,008.20 is: 13,437,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,658,619.40 : 15,987,929.10 = 8,958,008.20 : x
  2. Step 2: Convert to fraction form
    10,658,619.40/15,987,929.10 = 8,958,008.20/x
  3. Step 3: Cross multiply
    10,658,619.40x = 15,987,929.10 × 8,958,008.20
  4. Step 4: Simplify right side
    10,658,619.40x = 143,219,999,978,818.59
  5. Step 5: Solve for x
    x = 143,219,999,978,818.59/10,658,619.40
  6. Step 6: Final answer
    x = 13,437,012.30

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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.