Home / 10,088.98-15,128.86-5,408.19

Finding the Fourth Proportional to 10,088.98, 15,128.86 and 5,408.19

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Solution

The fourth proportional to 10,088.98, 15,128.86 and 5,408.19 is: 8,109.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,088.98 : 15,128.86 = 5,408.19 : x
  2. Step 2: Convert to fraction form
    10,088.98/15,128.86 = 5,408.19/x
  3. Step 3: Cross multiply
    10,088.98x = 15,128.86 × 5,408.19
  4. Step 4: Simplify right side
    10,088.98x = 81,819,749.36
  5. Step 5: Solve for x
    x = 81,819,749.36/10,088.98
  6. Step 6: Final answer
    x = 8,109.81

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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.