Home / 13,670.57-20,485.36-10,545.90

Finding the Fourth Proportional to 13,670.57, 20,485.36 and 10,545.90

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Solution

The fourth proportional to 13,670.57, 20,485.36 and 10,545.90 is: 15,803.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.57 : 20,485.36 = 10,545.90 : x
  2. Step 2: Convert to fraction form
    13,670.57/20,485.36 = 10,545.90/x
  3. Step 3: Cross multiply
    13,670.57x = 20,485.36 × 10,545.90
  4. Step 4: Simplify right side
    13,670.57x = 216,036,435.07
  5. Step 5: Solve for x
    x = 216,036,435.07/13,670.57
  6. Step 6: Final answer
    x = 15,803.03

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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.