Home / 15,403.60-21,298.44-13,435.30

Finding the Fourth Proportional to 15,403.60, 21,298.44 and 13,435.30

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Solution

The fourth proportional to 15,403.60, 21,298.44 and 13,435.30 is: 18,576.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,403.60 : 21,298.44 = 13,435.30 : x
  2. Step 2: Convert to fraction form
    15,403.60/21,298.44 = 13,435.30/x
  3. Step 3: Cross multiply
    15,403.60x = 21,298.44 × 13,435.30
  4. Step 4: Simplify right side
    15,403.60x = 286,150,930.93
  5. Step 5: Solve for x
    x = 286,150,930.93/15,403.60
  6. Step 6: Final answer
    x = 18,576.89

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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.