Home / 21,417.40-32,126.10-18,825.40

Finding the Fourth Proportional to 21,417.40, 32,126.10 and 18,825.40

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Solution

The fourth proportional to 21,417.40, 32,126.10 and 18,825.40 is: 28,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.40 : 32,126.10 = 18,825.40 : x
  2. Step 2: Convert to fraction form
    21,417.40/32,126.10 = 18,825.40/x
  3. Step 3: Cross multiply
    21,417.40x = 32,126.10 × 18,825.40
  4. Step 4: Simplify right side
    21,417.40x = 604,786,682.94
  5. Step 5: Solve for x
    x = 604,786,682.94/21,417.40
  6. Step 6: Final answer
    x = 28,238.10

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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.