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Finding the Fourth Proportional to 32,980.61, 45,511.00 and 21,042.63

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Solution

The fourth proportional to 32,980.61, 45,511.00 and 21,042.63 is: 29,037.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,980.61 : 45,511.00 = 21,042.63 : x
  2. Step 2: Convert to fraction form
    32,980.61/45,511.00 = 21,042.63/x
  3. Step 3: Cross multiply
    32,980.61x = 45,511.00 × 21,042.63
  4. Step 4: Simplify right side
    32,980.61x = 957,671,081.32
  5. Step 5: Solve for x
    x = 957,671,081.32/32,980.61
  6. Step 6: Final answer
    x = 29,037.40

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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.