Home / 15,485.18-21,358.22-9,520.07

Finding the Fourth Proportional to 15,485.18, 21,358.22 and 9,520.07

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Solution

The fourth proportional to 15,485.18, 21,358.22 and 9,520.07 is: 13,130.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.18 : 21,358.22 = 9,520.07 : x
  2. Step 2: Convert to fraction form
    15,485.18/21,358.22 = 9,520.07/x
  3. Step 3: Cross multiply
    15,485.18x = 21,358.22 × 9,520.07
  4. Step 4: Simplify right side
    15,485.18x = 203,331,595.08
  5. Step 5: Solve for x
    x = 203,331,595.08/15,485.18
  6. Step 6: Final answer
    x = 13,130.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.