Home / 14,210.40-21,315.60-13,672.80

Finding the Fourth Proportional to 14,210.40, 21,315.60 and 13,672.80

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Solution

The fourth proportional to 14,210.40, 21,315.60 and 13,672.80 is: 20,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,210.40 : 21,315.60 = 13,672.80 : x
  2. Step 2: Convert to fraction form
    14,210.40/21,315.60 = 13,672.80/x
  3. Step 3: Cross multiply
    14,210.40x = 21,315.60 × 13,672.80
  4. Step 4: Simplify right side
    14,210.40x = 291,443,935.68
  5. Step 5: Solve for x
    x = 291,443,935.68/14,210.40
  6. Step 6: Final answer
    x = 20,509.20

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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.