Home / 28,062.07-38,725.09-15,315.51

Finding the Fourth Proportional to 28,062.07, 38,725.09 and 15,315.51

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Solution

The fourth proportional to 28,062.07, 38,725.09 and 15,315.51 is: 21,135.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.07 : 38,725.09 = 15,315.51 : x
  2. Step 2: Convert to fraction form
    28,062.07/38,725.09 = 15,315.51/x
  3. Step 3: Cross multiply
    28,062.07x = 38,725.09 × 15,315.51
  4. Step 4: Simplify right side
    28,062.07x = 593,094,309.52
  5. Step 5: Solve for x
    x = 593,094,309.52/28,062.07
  6. Step 6: Final answer
    x = 21,135.09

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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.