Home / 30,515.40-45,772.76-8,328.32

Finding the Fourth Proportional to 30,515.40, 45,772.76 and 8,328.32

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Solution

The fourth proportional to 30,515.40, 45,772.76 and 8,328.32 is: 12,492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.40 : 45,772.76 = 8,328.32 : x
  2. Step 2: Convert to fraction form
    30,515.40/45,772.76 = 8,328.32/x
  3. Step 3: Cross multiply
    30,515.40x = 45,772.76 × 8,328.32
  4. Step 4: Simplify right side
    30,515.40x = 381,210,192.56
  5. Step 5: Solve for x
    x = 381,210,192.56/30,515.40
  6. Step 6: Final answer
    x = 12,492.39

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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.