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Finding the Fourth Proportional to 17,955.79, 26,931.62 and 4,809.22

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Solution

The fourth proportional to 17,955.79, 26,931.62 and 4,809.22 is: 7,213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,955.79 : 26,931.62 = 4,809.22 : x
  2. Step 2: Convert to fraction form
    17,955.79/26,931.62 = 4,809.22/x
  3. Step 3: Cross multiply
    17,955.79x = 26,931.62 × 4,809.22
  4. Step 4: Simplify right side
    17,955.79x = 129,520,030.23
  5. Step 5: Solve for x
    x = 129,520,030.23/17,955.79
  6. Step 6: Final answer
    x = 7,213.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.