Home / 38,689.70-53,376.71-28,642.19

Finding the Fourth Proportional to 38,689.70, 53,376.71 and 28,642.19

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Solution

The fourth proportional to 38,689.70, 53,376.71 and 28,642.19 is: 39,515.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689.70 : 53,376.71 = 28,642.19 : x
  2. Step 2: Convert to fraction form
    38,689.70/53,376.71 = 28,642.19/x
  3. Step 3: Cross multiply
    38,689.70x = 53,376.71 × 28,642.19
  4. Step 4: Simplify right side
    38,689.70x = 1,528,825,459.30
  5. Step 5: Solve for x
    x = 1,528,825,459.30/38,689.70
  6. Step 6: Final answer
    x = 39,515.06

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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.