Home / 20,705.83-31,059.77-5,916.95

Finding the Fourth Proportional to 20,705.83, 31,059.77 and 5,916.95

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Solution

The fourth proportional to 20,705.83, 31,059.77 and 5,916.95 is: 8,875.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.83 : 31,059.77 = 5,916.95 : x
  2. Step 2: Convert to fraction form
    20,705.83/31,059.77 = 5,916.95/x
  3. Step 3: Cross multiply
    20,705.83x = 31,059.77 × 5,916.95
  4. Step 4: Simplify right side
    20,705.83x = 183,779,106.10
  5. Step 5: Solve for x
    x = 183,779,106.10/20,705.83
  6. Step 6: Final answer
    x = 8,875.72

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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.