Home / 27,991.28-38,582.95-18,913.81

Finding the Fourth Proportional to 27,991.28, 38,582.95 and 18,913.81

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Solution

The fourth proportional to 27,991.28, 38,582.95 and 18,913.81 is: 26,070.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.28 : 38,582.95 = 18,913.81 : x
  2. Step 2: Convert to fraction form
    27,991.28/38,582.95 = 18,913.81/x
  3. Step 3: Cross multiply
    27,991.28x = 38,582.95 × 18,913.81
  4. Step 4: Simplify right side
    27,991.28x = 729,750,394.51
  5. Step 5: Solve for x
    x = 729,750,394.51/27,991.28
  6. Step 6: Final answer
    x = 26,070.63

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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.