Home / 12,430.05-18,645.12-4,638.75

Finding the Fourth Proportional to 12,430.05, 18,645.12 and 4,638.75

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Solution

The fourth proportional to 12,430.05, 18,645.12 and 4,638.75 is: 6,958.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.05 : 18,645.12 = 4,638.75 : x
  2. Step 2: Convert to fraction form
    12,430.05/18,645.12 = 4,638.75/x
  3. Step 3: Cross multiply
    12,430.05x = 18,645.12 × 4,638.75
  4. Step 4: Simplify right side
    12,430.05x = 86,490,050.40
  5. Step 5: Solve for x
    x = 86,490,050.40/12,430.05
  6. Step 6: Final answer
    x = 6,958.14

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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.