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Finding the Fourth Proportional to 9,779.40, 14,636.16 and 8,970.12

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Solution

The fourth proportional to 9,779.40, 14,636.16 and 8,970.12 is: 13,424.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,779.40 : 14,636.16 = 8,970.12 : x
  2. Step 2: Convert to fraction form
    9,779.40/14,636.16 = 8,970.12/x
  3. Step 3: Cross multiply
    9,779.40x = 14,636.16 × 8,970.12
  4. Step 4: Simplify right side
    9,779.40x = 131,288,111.54
  5. Step 5: Solve for x
    x = 131,288,111.54/9,779.40
  6. Step 6: Final answer
    x = 13,424.97

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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.