Home / 30,515.64-45,792.72-12,985.44

Finding the Fourth Proportional to 30,515.64, 45,792.72 and 12,985.44

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Solution

The fourth proportional to 30,515.64, 45,792.72 and 12,985.44 is: 19,486.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.64 : 45,792.72 = 12,985.44 : x
  2. Step 2: Convert to fraction form
    30,515.64/45,792.72 = 12,985.44/x
  3. Step 3: Cross multiply
    30,515.64x = 45,792.72 × 12,985.44
  4. Step 4: Simplify right side
    30,515.64x = 594,638,618.00
  5. Step 5: Solve for x
    x = 594,638,618.00/30,515.64
  6. Step 6: Final answer
    x = 19,486.36

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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.