Home / 15,779.39-21,775.52-9,065.50

Finding the Fourth Proportional to 15,779.39, 21,775.52 and 9,065.50

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Solution

The fourth proportional to 15,779.39, 21,775.52 and 9,065.50 is: 12,510.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779.39 : 21,775.52 = 9,065.50 : x
  2. Step 2: Convert to fraction form
    15,779.39/21,775.52 = 9,065.50/x
  3. Step 3: Cross multiply
    15,779.39x = 21,775.52 × 9,065.50
  4. Step 4: Simplify right side
    15,779.39x = 197,405,944.78
  5. Step 5: Solve for x
    x = 197,405,944.78/15,779.39
  6. Step 6: Final answer
    x = 12,510.37

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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.