Home / 30,210.75-45,325.76-12,675.87

Finding the Fourth Proportional to 30,210.75, 45,325.76 and 12,675.87

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Solution

The fourth proportional to 30,210.75, 45,325.76 and 12,675.87 is: 19,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.75 : 45,325.76 = 12,675.87 : x
  2. Step 2: Convert to fraction form
    30,210.75/45,325.76 = 12,675.87/x
  3. Step 3: Cross multiply
    30,210.75x = 45,325.76 × 12,675.87
  4. Step 4: Simplify right side
    30,210.75x = 574,543,378.03
  5. Step 5: Solve for x
    x = 574,543,378.03/30,210.75
  6. Step 6: Final answer
    x = 19,017.85

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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.