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Finding the Fourth Proportional to 27,906.50, 38,510.99 and 15,332.06

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Solution

The fourth proportional to 27,906.50, 38,510.99 and 15,332.06 is: 21,158.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.50 : 38,510.99 = 15,332.06 : x
  2. Step 2: Convert to fraction form
    27,906.50/38,510.99 = 15,332.06/x
  3. Step 3: Cross multiply
    27,906.50x = 38,510.99 × 15,332.06
  4. Step 4: Simplify right side
    27,906.50x = 590,452,809.34
  5. Step 5: Solve for x
    x = 590,452,809.34/27,906.50
  6. Step 6: Final answer
    x = 21,158.25

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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.