Home / 30,219.30-45,328.95-21,881.70

Finding the Fourth Proportional to 30,219.30, 45,328.95 and 21,881.70

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Solution

The fourth proportional to 30,219.30, 45,328.95 and 21,881.70 is: 32,822.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,219.30 : 45,328.95 = 21,881.70 : x
  2. Step 2: Convert to fraction form
    30,219.30/45,328.95 = 21,881.70/x
  3. Step 3: Cross multiply
    30,219.30x = 45,328.95 × 21,881.70
  4. Step 4: Simplify right side
    30,219.30x = 991,874,485.22
  5. Step 5: Solve for x
    x = 991,874,485.22/30,219.30
  6. Step 6: Final answer
    x = 32,822.55

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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.