Home / 30,748.85-46,123.28-21,235.40

Finding the Fourth Proportional to 30,748.85, 46,123.28 and 21,235.40

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Solution

The fourth proportional to 30,748.85, 46,123.28 and 21,235.40 is: 31,853.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,748.85 : 46,123.28 = 21,235.40 : x
  2. Step 2: Convert to fraction form
    30,748.85/46,123.28 = 21,235.40/x
  3. Step 3: Cross multiply
    30,748.85x = 46,123.28 × 21,235.40
  4. Step 4: Simplify right side
    30,748.85x = 979,446,193.94
  5. Step 5: Solve for x
    x = 979,446,193.94/30,748.85
  6. Step 6: Final answer
    x = 31,853.10

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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.