Home / 21,063.68-31,521.16-19,864.74

Finding the Fourth Proportional to 21,063.68, 31,521.16 and 19,864.74

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Solution

The fourth proportional to 21,063.68, 31,521.16 and 19,864.74 is: 29,726.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.68 : 31,521.16 = 19,864.74 : x
  2. Step 2: Convert to fraction form
    21,063.68/31,521.16 = 19,864.74/x
  3. Step 3: Cross multiply
    21,063.68x = 31,521.16 × 19,864.74
  4. Step 4: Simplify right side
    21,063.68x = 626,159,548.57
  5. Step 5: Solve for x
    x = 626,159,548.57/21,063.68
  6. Step 6: Final answer
    x = 29,726.98

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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.