Home / 25,746.81-38,618.29-7,977.61

Finding the Fourth Proportional to 25,746.81, 38,618.29 and 7,977.61

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Solution

The fourth proportional to 25,746.81, 38,618.29 and 7,977.61 is: 11,965.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,746.81 : 38,618.29 = 7,977.61 : x
  2. Step 2: Convert to fraction form
    25,746.81/38,618.29 = 7,977.61/x
  3. Step 3: Cross multiply
    25,746.81x = 38,618.29 × 7,977.61
  4. Step 4: Simplify right side
    25,746.81x = 308,081,509.26
  5. Step 5: Solve for x
    x = 308,081,509.26/25,746.81
  6. Step 6: Final answer
    x = 11,965.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.