Home / 20,968.04-28,934.88-11,536.40

Finding the Fourth Proportional to 20,968.04, 28,934.88 and 11,536.40

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Solution

The fourth proportional to 20,968.04, 28,934.88 and 11,536.40 is: 15,919.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.04 : 28,934.88 = 11,536.40 : x
  2. Step 2: Convert to fraction form
    20,968.04/28,934.88 = 11,536.40/x
  3. Step 3: Cross multiply
    20,968.04x = 28,934.88 × 11,536.40
  4. Step 4: Simplify right side
    20,968.04x = 333,804,349.63
  5. Step 5: Solve for x
    x = 333,804,349.63/20,968.04
  6. Step 6: Final answer
    x = 15,919.67

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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.