Home / 30,017.55-41,429.95-19,790.63

Finding the Fourth Proportional to 30,017.55, 41,429.95 and 19,790.63

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Solution

The fourth proportional to 30,017.55, 41,429.95 and 19,790.63 is: 27,314.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,017.55 : 41,429.95 = 19,790.63 : x
  2. Step 2: Convert to fraction form
    30,017.55/41,429.95 = 19,790.63/x
  3. Step 3: Cross multiply
    30,017.55x = 41,429.95 × 19,790.63
  4. Step 4: Simplify right side
    30,017.55x = 819,924,710.10
  5. Step 5: Solve for x
    x = 819,924,710.10/30,017.55
  6. Step 6: Final answer
    x = 27,314.84

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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.