Home / 39,145.40-58,718.10-18,085.40

Finding the Fourth Proportional to 39,145.40, 58,718.10 and 18,085.40

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Solution

The fourth proportional to 39,145.40, 58,718.10 and 18,085.40 is: 27,128.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,145.40 : 58,718.10 = 18,085.40 : x
  2. Step 2: Convert to fraction form
    39,145.40/58,718.10 = 18,085.40/x
  3. Step 3: Cross multiply
    39,145.40x = 58,718.10 × 18,085.40
  4. Step 4: Simplify right side
    39,145.40x = 1,061,940,325.74
  5. Step 5: Solve for x
    x = 1,061,940,325.74/39,145.40
  6. Step 6: Final answer
    x = 27,128.10

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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.