Home / 21,259.56-31,889.34-17,545.80

Finding the Fourth Proportional to 21,259.56, 31,889.34 and 17,545.80

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Solution

The fourth proportional to 21,259.56, 31,889.34 and 17,545.80 is: 26,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.56 : 31,889.34 = 17,545.80 : x
  2. Step 2: Convert to fraction form
    21,259.56/31,889.34 = 17,545.80/x
  3. Step 3: Cross multiply
    21,259.56x = 31,889.34 × 17,545.80
  4. Step 4: Simplify right side
    21,259.56x = 559,523,981.77
  5. Step 5: Solve for x
    x = 559,523,981.77/21,259.56
  6. Step 6: Final answer
    x = 26,318.70

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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.