Home / 30,870.32-46,311.88-12,403.76

Finding the Fourth Proportional to 30,870.32, 46,311.88 and 12,403.76

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Solution

The fourth proportional to 30,870.32, 46,311.88 and 12,403.76 is: 18,608.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,870.32 : 46,311.88 = 12,403.76 : x
  2. Step 2: Convert to fraction form
    30,870.32/46,311.88 = 12,403.76/x
  3. Step 3: Cross multiply
    30,870.32x = 46,311.88 × 12,403.76
  4. Step 4: Simplify right side
    30,870.32x = 574,441,444.67
  5. Step 5: Solve for x
    x = 574,441,444.67/30,870.32
  6. Step 6: Final answer
    x = 18,608.21

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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.