Home / 13,555.63-18,706.77-7,587.30

Finding the Fourth Proportional to 13,555.63, 18,706.77 and 7,587.30

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Solution

The fourth proportional to 13,555.63, 18,706.77 and 7,587.30 is: 10,470.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.63 : 18,706.77 = 7,587.30 : x
  2. Step 2: Convert to fraction form
    13,555.63/18,706.77 = 7,587.30/x
  3. Step 3: Cross multiply
    13,555.63x = 18,706.77 × 7,587.30
  4. Step 4: Simplify right side
    13,555.63x = 141,933,857.05
  5. Step 5: Solve for x
    x = 141,933,857.05/13,555.63
  6. Step 6: Final answer
    x = 10,470.47

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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.