Home / 30,885.91-42,600.03-19,557.25

Finding the Fourth Proportional to 30,885.91, 42,600.03 and 19,557.25

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Solution

The fourth proportional to 30,885.91, 42,600.03 and 19,557.25 is: 26,974.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,885.91 : 42,600.03 = 19,557.25 : x
  2. Step 2: Convert to fraction form
    30,885.91/42,600.03 = 19,557.25/x
  3. Step 3: Cross multiply
    30,885.91x = 42,600.03 × 19,557.25
  4. Step 4: Simplify right side
    30,885.91x = 833,139,256.88
  5. Step 5: Solve for x
    x = 833,139,256.88/30,885.91
  6. Step 6: Final answer
    x = 26,974.74

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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.