Home / 9,905.06-13,668.90-5,429.10

Finding the Fourth Proportional to 9,905.06, 13,668.90 and 5,429.10

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Solution

The fourth proportional to 9,905.06, 13,668.90 and 5,429.10 is: 7,492.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.06 : 13,668.90 = 5,429.10 : x
  2. Step 2: Convert to fraction form
    9,905.06/13,668.90 = 5,429.10/x
  3. Step 3: Cross multiply
    9,905.06x = 13,668.90 × 5,429.10
  4. Step 4: Simplify right side
    9,905.06x = 74,209,824.99
  5. Step 5: Solve for x
    x = 74,209,824.99/9,905.06
  6. Step 6: Final answer
    x = 7,492.11

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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.