Home / 13,969.40-20,929.72-11,644.35

Finding the Fourth Proportional to 13,969.40, 20,929.72 and 11,644.35

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Solution

The fourth proportional to 13,969.40, 20,929.72 and 11,644.35 is: 17,446.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969.40 : 20,929.72 = 11,644.35 : x
  2. Step 2: Convert to fraction form
    13,969.40/20,929.72 = 11,644.35/x
  3. Step 3: Cross multiply
    13,969.40x = 20,929.72 × 11,644.35
  4. Step 4: Simplify right side
    13,969.40x = 243,712,985.08
  5. Step 5: Solve for x
    x = 243,712,985.08/13,969.40
  6. Step 6: Final answer
    x = 17,446.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.