Home / 14,088.80-21,133.20-8,256.80

Finding the Fourth Proportional to 14,088.80, 21,133.20 and 8,256.80

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Solution

The fourth proportional to 14,088.80, 21,133.20 and 8,256.80 is: 12,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,088.80 : 21,133.20 = 8,256.80 : x
  2. Step 2: Convert to fraction form
    14,088.80/21,133.20 = 8,256.80/x
  3. Step 3: Cross multiply
    14,088.80x = 21,133.20 × 8,256.80
  4. Step 4: Simplify right side
    14,088.80x = 174,492,605.76
  5. Step 5: Solve for x
    x = 174,492,605.76/14,088.80
  6. Step 6: Final answer
    x = 12,385.20

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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.