Home / 14,779.95-20,400.85-9,116.46

Finding the Fourth Proportional to 14,779.95, 20,400.85 and 9,116.46

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Solution

The fourth proportional to 14,779.95, 20,400.85 and 9,116.46 is: 12,583.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.95 : 20,400.85 = 9,116.46 : x
  2. Step 2: Convert to fraction form
    14,779.95/20,400.85 = 9,116.46/x
  3. Step 3: Cross multiply
    14,779.95x = 20,400.85 × 9,116.46
  4. Step 4: Simplify right side
    14,779.95x = 185,983,544.39
  5. Step 5: Solve for x
    x = 185,983,544.39/14,779.95
  6. Step 6: Final answer
    x = 12,583.51

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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.