Home / 30,130.16-45,215.96-10,408.75

Finding the Fourth Proportional to 30,130.16, 45,215.96 and 10,408.75

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Solution

The fourth proportional to 30,130.16, 45,215.96 and 10,408.75 is: 15,620.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,130.16 : 45,215.96 = 10,408.75 : x
  2. Step 2: Convert to fraction form
    30,130.16/45,215.96 = 10,408.75/x
  3. Step 3: Cross multiply
    30,130.16x = 45,215.96 × 10,408.75
  4. Step 4: Simplify right side
    30,130.16x = 470,641,458.57
  5. Step 5: Solve for x
    x = 470,641,458.57/30,130.16
  6. Step 6: Final answer
    x = 15,620.28

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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.