Home / 19,090.88-26,360.16-12,381.20

Finding the Fourth Proportional to 19,090.88, 26,360.16 and 12,381.20

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Solution

The fourth proportional to 19,090.88, 26,360.16 and 12,381.20 is: 17,095.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,090.88 : 26,360.16 = 12,381.20 : x
  2. Step 2: Convert to fraction form
    19,090.88/26,360.16 = 12,381.20/x
  3. Step 3: Cross multiply
    19,090.88x = 26,360.16 × 12,381.20
  4. Step 4: Simplify right side
    19,090.88x = 326,370,412.99
  5. Step 5: Solve for x
    x = 326,370,412.99/19,090.88
  6. Step 6: Final answer
    x = 17,095.62

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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.