Home / 20,519.84-28,317.40-11,088.40

Finding the Fourth Proportional to 20,519.84, 28,317.40 and 11,088.40

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Solution

The fourth proportional to 20,519.84, 28,317.40 and 11,088.40 is: 15,302.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.84 : 28,317.40 = 11,088.40 : x
  2. Step 2: Convert to fraction form
    20,519.84/28,317.40 = 11,088.40/x
  3. Step 3: Cross multiply
    20,519.84x = 28,317.40 × 11,088.40
  4. Step 4: Simplify right side
    20,519.84x = 313,994,658.16
  5. Step 5: Solve for x
    x = 313,994,658.16/20,519.84
  6. Step 6: Final answer
    x = 15,302.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.