Home / 28,527.17-39,364.47-15,778.32

Finding the Fourth Proportional to 28,527.17, 39,364.47 and 15,778.32

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Solution

The fourth proportional to 28,527.17, 39,364.47 and 15,778.32 is: 21,772.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,527.17 : 39,364.47 = 15,778.32 : x
  2. Step 2: Convert to fraction form
    28,527.17/39,364.47 = 15,778.32/x
  3. Step 3: Cross multiply
    28,527.17x = 39,364.47 × 15,778.32
  4. Step 4: Simplify right side
    28,527.17x = 621,105,204.29
  5. Step 5: Solve for x
    x = 621,105,204.29/28,527.17
  6. Step 6: Final answer
    x = 21,772.41

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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.