Home / 21,054.51-31,601.61-15,490.89

Finding the Fourth Proportional to 21,054.51, 31,601.61 and 15,490.89

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Solution

The fourth proportional to 21,054.51, 31,601.61 and 15,490.89 is: 23,250.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.51 : 31,601.61 = 15,490.89 : x
  2. Step 2: Convert to fraction form
    21,054.51/31,601.61 = 15,490.89/x
  3. Step 3: Cross multiply
    21,054.51x = 31,601.61 × 15,490.89
  4. Step 4: Simplify right side
    21,054.51x = 489,537,064.33
  5. Step 5: Solve for x
    x = 489,537,064.33/21,054.51
  6. Step 6: Final answer
    x = 23,250.94

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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.