Home / 21,128.04-31,707.45-15,596.28

Finding the Fourth Proportional to 21,128.04, 31,707.45 and 15,596.28

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Solution

The fourth proportional to 21,128.04, 31,707.45 and 15,596.28 is: 23,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,128.04 : 31,707.45 = 15,596.28 : x
  2. Step 2: Convert to fraction form
    21,128.04/31,707.45 = 15,596.28/x
  3. Step 3: Cross multiply
    21,128.04x = 31,707.45 × 15,596.28
  4. Step 4: Simplify right side
    21,128.04x = 494,518,268.29
  5. Step 5: Solve for x
    x = 494,518,268.29/21,128.04
  6. Step 6: Final answer
    x = 23,405.78

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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.