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Finding the Fourth Proportional to 13,598.01, 18,765.88 and 7,931.86

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Solution

The fourth proportional to 13,598.01, 18,765.88 and 7,931.86 is: 10,946.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598.01 : 18,765.88 = 7,931.86 : x
  2. Step 2: Convert to fraction form
    13,598.01/18,765.88 = 7,931.86/x
  3. Step 3: Cross multiply
    13,598.01x = 18,765.88 × 7,931.86
  4. Step 4: Simplify right side
    13,598.01x = 148,848,239.11
  5. Step 5: Solve for x
    x = 148,848,239.11/13,598.01
  6. Step 6: Final answer
    x = 10,946.33

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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.