Home / 28,985.63-43,462.46-8,989.58

Finding the Fourth Proportional to 28,985.63, 43,462.46 and 8,989.58

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Solution

The fourth proportional to 28,985.63, 43,462.46 and 8,989.58 is: 13,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985.63 : 43,462.46 = 8,989.58 : x
  2. Step 2: Convert to fraction form
    28,985.63/43,462.46 = 8,989.58/x
  3. Step 3: Cross multiply
    28,985.63x = 43,462.46 × 8,989.58
  4. Step 4: Simplify right side
    28,985.63x = 390,709,392.30
  5. Step 5: Solve for x
    x = 390,709,392.30/28,985.63
  6. Step 6: Final answer
    x = 13,479.42

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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.