Home / 28,275.35-39,020.72-15,529.35

Finding the Fourth Proportional to 28,275.35, 39,020.72 and 15,529.35

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Solution

The fourth proportional to 28,275.35, 39,020.72 and 15,529.35 is: 21,430.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.35 : 39,020.72 = 15,529.35 : x
  2. Step 2: Convert to fraction form
    28,275.35/39,020.72 = 15,529.35/x
  3. Step 3: Cross multiply
    28,275.35x = 39,020.72 × 15,529.35
  4. Step 4: Simplify right side
    28,275.35x = 605,966,340.49
  5. Step 5: Solve for x
    x = 605,966,340.49/28,275.35
  6. Step 6: Final answer
    x = 21,430.91

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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.