Home / 21,048.18-29,049.63-13,503.03

Finding the Fourth Proportional to 21,048.18, 29,049.63 and 13,503.03

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Solution

The fourth proportional to 21,048.18, 29,049.63 and 13,503.03 is: 18,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,048.18 : 29,049.63 = 13,503.03 : x
  2. Step 2: Convert to fraction form
    21,048.18/29,049.63 = 13,503.03/x
  3. Step 3: Cross multiply
    21,048.18x = 29,049.63 × 13,503.03
  4. Step 4: Simplify right side
    21,048.18x = 392,258,025.38
  5. Step 5: Solve for x
    x = 392,258,025.38/21,048.18
  6. Step 6: Final answer
    x = 18,636.20

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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.