Home / 18,703.07-25,812.91-12,328.57

Finding the Fourth Proportional to 18,703.07, 25,812.91 and 12,328.57

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Solution

The fourth proportional to 18,703.07, 25,812.91 and 12,328.57 is: 17,015.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.07 : 25,812.91 = 12,328.57 : x
  2. Step 2: Convert to fraction form
    18,703.07/25,812.91 = 12,328.57/x
  3. Step 3: Cross multiply
    18,703.07x = 25,812.91 × 12,328.57
  4. Step 4: Simplify right side
    18,703.07x = 318,236,267.84
  5. Step 5: Solve for x
    x = 318,236,267.84/18,703.07
  6. Step 6: Final answer
    x = 17,015.19

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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.