Home / 45,117.86-67,655.46-13,515.74

Finding the Fourth Proportional to 45,117.86, 67,655.46 and 13,515.74

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Solution

The fourth proportional to 45,117.86, 67,655.46 and 13,515.74 is: 20,267.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,117.86 : 67,655.46 = 13,515.74 : x
  2. Step 2: Convert to fraction form
    45,117.86/67,655.46 = 13,515.74/x
  3. Step 3: Cross multiply
    45,117.86x = 67,655.46 × 13,515.74
  4. Step 4: Simplify right side
    45,117.86x = 914,413,606.94
  5. Step 5: Solve for x
    x = 914,413,606.94/45,117.86
  6. Step 6: Final answer
    x = 20,267.22

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1.5x scale

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.