Home / 13,421.71-18,521.60-7,453.23

Finding the Fourth Proportional to 13,421.71, 18,521.60 and 7,453.23

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Solution

The fourth proportional to 13,421.71, 18,521.60 and 7,453.23 is: 10,285.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.71 : 18,521.60 = 7,453.23 : x
  2. Step 2: Convert to fraction form
    13,421.71/18,521.60 = 7,453.23/x
  3. Step 3: Cross multiply
    13,421.71x = 18,521.60 × 7,453.23
  4. Step 4: Simplify right side
    13,421.71x = 138,045,638.05
  5. Step 5: Solve for x
    x = 138,045,638.05/13,421.71
  6. Step 6: Final answer
    x = 10,285.25

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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.