Home / 25,637.51-35,378.55-18,920.68

Finding the Fourth Proportional to 25,637.51, 35,378.55 and 18,920.68

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Solution

The fourth proportional to 25,637.51, 35,378.55 and 18,920.68 is: 26,109.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,637.51 : 35,378.55 = 18,920.68 : x
  2. Step 2: Convert to fraction form
    25,637.51/35,378.55 = 18,920.68/x
  3. Step 3: Cross multiply
    25,637.51x = 35,378.55 × 18,920.68
  4. Step 4: Simplify right side
    25,637.51x = 669,386,134.97
  5. Step 5: Solve for x
    x = 669,386,134.97/25,637.51
  6. Step 6: Final answer
    x = 26,109.64

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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.