Home / 28,018.84-38,681.82-18,600.28

Finding the Fourth Proportional to 28,018.84, 38,681.82 and 18,600.28

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Solution

The fourth proportional to 28,018.84, 38,681.82 and 18,600.28 is: 25,678.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.84 : 38,681.82 = 18,600.28 : x
  2. Step 2: Convert to fraction form
    28,018.84/38,681.82 = 18,600.28/x
  3. Step 3: Cross multiply
    28,018.84x = 38,681.82 × 18,600.28
  4. Step 4: Simplify right side
    28,018.84x = 719,492,682.91
  5. Step 5: Solve for x
    x = 719,492,682.91/28,018.84
  6. Step 6: Final answer
    x = 25,678.89

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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.