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Finding the Fourth Proportional to 21,670.51, 32,510.22 and 9,818.59

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Solution

The fourth proportional to 21,670.51, 32,510.22 and 9,818.59 is: 14,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.51 : 32,510.22 = 9,818.59 : x
  2. Step 2: Convert to fraction form
    21,670.51/32,510.22 = 9,818.59/x
  3. Step 3: Cross multiply
    21,670.51x = 32,510.22 × 9,818.59
  4. Step 4: Simplify right side
    21,670.51x = 319,204,309.35
  5. Step 5: Solve for x
    x = 319,204,309.35/21,670.51
  6. Step 6: Final answer
    x = 14,729.90

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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.