Home / 15,585.45-21,506.04-8,779.29

Finding the Fourth Proportional to 15,585.45, 21,506.04 and 8,779.29

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Solution

The fourth proportional to 15,585.45, 21,506.04 and 8,779.29 is: 12,114.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.45 : 21,506.04 = 8,779.29 : x
  2. Step 2: Convert to fraction form
    15,585.45/21,506.04 = 8,779.29/x
  3. Step 3: Cross multiply
    15,585.45x = 21,506.04 × 8,779.29
  4. Step 4: Simplify right side
    15,585.45x = 188,807,761.91
  5. Step 5: Solve for x
    x = 188,807,761.91/15,585.45
  6. Step 6: Final answer
    x = 12,114.36

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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.