Home / 39,412.71-54,389.52-28,101.89

Finding the Fourth Proportional to 39,412.71, 54,389.52 and 28,101.89

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Solution

The fourth proportional to 39,412.71, 54,389.52 and 28,101.89 is: 38,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,412.71 : 54,389.52 = 28,101.89 : x
  2. Step 2: Convert to fraction form
    39,412.71/54,389.52 = 28,101.89/x
  3. Step 3: Cross multiply
    39,412.71x = 54,389.52 × 28,101.89
  4. Step 4: Simplify right side
    39,412.71x = 1,528,448,444.17
  5. Step 5: Solve for x
    x = 1,528,448,444.17/39,412.71
  6. Step 6: Final answer
    x = 38,780.60

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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.