Home / 14,389.20-21,564.60-10,280.40

Finding the Fourth Proportional to 14,389.20, 21,564.60 and 10,280.40

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Solution

The fourth proportional to 14,389.20, 21,564.60 and 10,280.40 is: 15,406.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,389.20 : 21,564.60 = 10,280.40 : x
  2. Step 2: Convert to fraction form
    14,389.20/21,564.60 = 10,280.40/x
  3. Step 3: Cross multiply
    14,389.20x = 21,564.60 × 10,280.40
  4. Step 4: Simplify right side
    14,389.20x = 221,692,713.84
  5. Step 5: Solve for x
    x = 221,692,713.84/14,389.20
  6. Step 6: Final answer
    x = 15,406.88

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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.