Home / 15,289.04-21,103.36-9,984.66

Finding the Fourth Proportional to 15,289.04, 21,103.36 and 9,984.66

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Solution

The fourth proportional to 15,289.04, 21,103.36 and 9,984.66 is: 13,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.04 : 21,103.36 = 9,984.66 : x
  2. Step 2: Convert to fraction form
    15,289.04/21,103.36 = 9,984.66/x
  3. Step 3: Cross multiply
    15,289.04x = 21,103.36 × 9,984.66
  4. Step 4: Simplify right side
    15,289.04x = 210,709,874.46
  5. Step 5: Solve for x
    x = 210,709,874.46/15,289.04
  6. Step 6: Final answer
    x = 13,781.76

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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.