Home / 13,430.58-20,047.26-12,440.96

Finding the Fourth Proportional to 13,430.58, 20,047.26 and 12,440.96

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Solution

The fourth proportional to 13,430.58, 20,047.26 and 12,440.96 is: 18,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.58 : 20,047.26 = 12,440.96 : x
  2. Step 2: Convert to fraction form
    13,430.58/20,047.26 = 12,440.96/x
  3. Step 3: Cross multiply
    13,430.58x = 20,047.26 × 12,440.96
  4. Step 4: Simplify right side
    13,430.58x = 249,407,181.36
  5. Step 5: Solve for x
    x = 249,407,181.36/13,430.58
  6. Step 6: Final answer
    x = 18,570.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.