Home / 18,718.10-25,822.70-12,666.19

Finding the Fourth Proportional to 18,718.10, 25,822.70 and 12,666.19

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Solution

The fourth proportional to 18,718.10, 25,822.70 and 12,666.19 is: 17,473.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.10 : 25,822.70 = 12,666.19 : x
  2. Step 2: Convert to fraction form
    18,718.10/25,822.70 = 12,666.19/x
  3. Step 3: Cross multiply
    18,718.10x = 25,822.70 × 12,666.19
  4. Step 4: Simplify right side
    18,718.10x = 327,075,032.07
  5. Step 5: Solve for x
    x = 327,075,032.07/18,718.10
  6. Step 6: Final answer
    x = 17,473.73

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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.