Home / 15,614,971.52-21,549,334.09-8,645,649.21

Finding the Fourth Proportional to 15,614,971.52, 21,549,334.09 and 8,645,649.21

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Solution

The fourth proportional to 15,614,971.52, 21,549,334.09 and 8,645,649.21 is: 11,931,368.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,614,971.52 : 21,549,334.09 = 8,645,649.21 : x
  2. Step 2: Convert to fraction form
    15,614,971.52/21,549,334.09 = 8,645,649.21/x
  3. Step 3: Cross multiply
    15,614,971.52x = 21,549,334.09 × 8,645,649.21
  4. Step 4: Simplify right side
    15,614,971.52x = 186,307,983,229,620.44
  5. Step 5: Solve for x
    x = 186,307,983,229,620.44/15,614,971.52
  6. Step 6: Final answer
    x = 11,931,368.75

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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.