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Finding the Fourth Proportional to 10,668.70, 14,715.03 and 7,130.62

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Solution

The fourth proportional to 10,668.70, 14,715.03 and 7,130.62 is: 9,835.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,668.70 : 14,715.03 = 7,130.62 : x
  2. Step 2: Convert to fraction form
    10,668.70/14,715.03 = 7,130.62/x
  3. Step 3: Cross multiply
    10,668.70x = 14,715.03 × 7,130.62
  4. Step 4: Simplify right side
    10,668.70x = 104,927,287.22
  5. Step 5: Solve for x
    x = 104,927,287.22/10,668.70
  6. Step 6: Final answer
    x = 9,835.06

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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.