Home / 20,533.51-28,333.65-12,038.50

Finding the Fourth Proportional to 20,533.51, 28,333.65 and 12,038.50

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Solution

The fourth proportional to 20,533.51, 28,333.65 and 12,038.50 is: 16,611.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.51 : 28,333.65 = 12,038.50 : x
  2. Step 2: Convert to fraction form
    20,533.51/28,333.65 = 12,038.50/x
  3. Step 3: Cross multiply
    20,533.51x = 28,333.65 × 12,038.50
  4. Step 4: Simplify right side
    20,533.51x = 341,094,645.53
  5. Step 5: Solve for x
    x = 341,094,645.53/20,533.51
  6. Step 6: Final answer
    x = 16,611.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.