Home / 13,699.16-20,449.68-12,038.46

Finding the Fourth Proportional to 13,699.16, 20,449.68 and 12,038.46

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Solution

The fourth proportional to 13,699.16, 20,449.68 and 12,038.46 is: 17,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.16 : 20,449.68 = 12,038.46 : x
  2. Step 2: Convert to fraction form
    13,699.16/20,449.68 = 12,038.46/x
  3. Step 3: Cross multiply
    13,699.16x = 20,449.68 × 12,038.46
  4. Step 4: Simplify right side
    13,699.16x = 246,182,654.69
  5. Step 5: Solve for x
    x = 246,182,654.69/13,699.16
  6. Step 6: Final answer
    x = 17,970.64

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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.