Home / 13,603.59-18,757.71-8,561.63

Finding the Fourth Proportional to 13,603.59, 18,757.71 and 8,561.63

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Solution

The fourth proportional to 13,603.59, 18,757.71 and 8,561.63 is: 11,805.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.59 : 18,757.71 = 8,561.63 : x
  2. Step 2: Convert to fraction form
    13,603.59/18,757.71 = 8,561.63/x
  3. Step 3: Cross multiply
    13,603.59x = 18,757.71 × 8,561.63
  4. Step 4: Simplify right side
    13,603.59x = 160,596,478.88
  5. Step 5: Solve for x
    x = 160,596,478.88/13,603.59
  6. Step 6: Final answer
    x = 11,805.45

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1.5x scale

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.