Home / 13,555.96-18,707.56-7,587.58

Finding the Fourth Proportional to 13,555.96, 18,707.56 and 7,587.58

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Solution

The fourth proportional to 13,555.96, 18,707.56 and 7,587.58 is: 10,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.96 : 18,707.56 = 7,587.58 : x
  2. Step 2: Convert to fraction form
    13,555.96/18,707.56 = 7,587.58/x
  3. Step 3: Cross multiply
    13,555.96x = 18,707.56 × 7,587.58
  4. Step 4: Simplify right side
    13,555.96x = 141,945,108.10
  5. Step 5: Solve for x
    x = 141,945,108.10/13,555.96
  6. Step 6: Final answer
    x = 10,471.05

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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.