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Finding the Fourth Proportional to 35,969.76, 53,978.88 and 12,596.40

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Solution

The fourth proportional to 35,969.76, 53,978.88 and 12,596.40 is: 18,903.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,969.76 : 53,978.88 = 12,596.40 : x
  2. Step 2: Convert to fraction form
    35,969.76/53,978.88 = 12,596.40/x
  3. Step 3: Cross multiply
    35,969.76x = 53,978.88 × 12,596.40
  4. Step 4: Simplify right side
    35,969.76x = 679,939,564.03
  5. Step 5: Solve for x
    x = 679,939,564.03/35,969.76
  6. Step 6: Final answer
    x = 18,903.09

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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.