Home / 28,059.14-38,721.84-15,312.43

Finding the Fourth Proportional to 28,059.14, 38,721.84 and 15,312.43

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Solution

The fourth proportional to 28,059.14, 38,721.84 and 15,312.43 is: 21,131.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.14 : 38,721.84 = 15,312.43 : x
  2. Step 2: Convert to fraction form
    28,059.14/38,721.84 = 15,312.43/x
  3. Step 3: Cross multiply
    28,059.14x = 38,721.84 × 15,312.43
  4. Step 4: Simplify right side
    28,059.14x = 592,925,323.77
  5. Step 5: Solve for x
    x = 592,925,323.77/28,059.14
  6. Step 6: Final answer
    x = 21,131.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.