Home / 14,639.28-21,980.79-14,420.58

Finding the Fourth Proportional to 14,639.28, 21,980.79 and 14,420.58

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Solution

The fourth proportional to 14,639.28, 21,980.79 and 14,420.58 is: 21,652.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,639.28 : 21,980.79 = 14,420.58 : x
  2. Step 2: Convert to fraction form
    14,639.28/21,980.79 = 14,420.58/x
  3. Step 3: Cross multiply
    14,639.28x = 21,980.79 × 14,420.58
  4. Step 4: Simplify right side
    14,639.28x = 316,975,740.66
  5. Step 5: Solve for x
    x = 316,975,740.66/14,639.28
  6. Step 6: Final answer
    x = 21,652.41

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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.