Home / 13,405.48-20,079.06-9,003.40

Finding the Fourth Proportional to 13,405.48, 20,079.06 and 9,003.40

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Solution

The fourth proportional to 13,405.48, 20,079.06 and 9,003.40 is: 13,485.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.48 : 20,079.06 = 9,003.40 : x
  2. Step 2: Convert to fraction form
    13,405.48/20,079.06 = 9,003.40/x
  3. Step 3: Cross multiply
    13,405.48x = 20,079.06 × 9,003.40
  4. Step 4: Simplify right side
    13,405.48x = 180,779,808.80
  5. Step 5: Solve for x
    x = 180,779,808.80/13,405.48
  6. Step 6: Final answer
    x = 13,485.52

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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.