Home / 13,878,707.47-20,820,291.94-4,778,567.66

Finding the Fourth Proportional to 13,878,707.47, 20,820,291.94 and 4,778,567.66

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Solution

The fourth proportional to 13,878,707.47, 20,820,291.94 and 4,778,567.66 is: 7,168,619.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878,707.47 : 20,820,291.94 = 4,778,567.66 : x
  2. Step 2: Convert to fraction form
    13,878,707.47/20,820,291.94 = 4,778,567.66/x
  3. Step 3: Cross multiply
    13,878,707.47x = 20,820,291.94 × 4,778,567.66
  4. Step 4: Simplify right side
    13,878,707.47x = 99,491,173,794,266.59
  5. Step 5: Solve for x
    x = 99,491,173,794,266.59/13,878,707.47
  6. Step 6: Final answer
    x = 7,168,619.56

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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.