Home / 13,545.36-20,317.53-4,780.08

Finding the Fourth Proportional to 13,545.36, 20,317.53 and 4,780.08

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Solution

The fourth proportional to 13,545.36, 20,317.53 and 4,780.08 is: 7,169.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.36 : 20,317.53 = 4,780.08 : x
  2. Step 2: Convert to fraction form
    13,545.36/20,317.53 = 4,780.08/x
  3. Step 3: Cross multiply
    13,545.36x = 20,317.53 × 4,780.08
  4. Step 4: Simplify right side
    13,545.36x = 97,119,418.80
  5. Step 5: Solve for x
    x = 97,119,418.80/13,545.36
  6. Step 6: Final answer
    x = 7,169.94

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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.