Home / 15,775.23-21,771.36-8,701.65

Finding the Fourth Proportional to 15,775.23, 21,771.36 and 8,701.65

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Solution

The fourth proportional to 15,775.23, 21,771.36 and 8,701.65 is: 12,009.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,775.23 : 21,771.36 = 8,701.65 : x
  2. Step 2: Convert to fraction form
    15,775.23/21,771.36 = 8,701.65/x
  3. Step 3: Cross multiply
    15,775.23x = 21,771.36 × 8,701.65
  4. Step 4: Simplify right side
    15,775.23x = 189,446,803.76
  5. Step 5: Solve for x
    x = 189,446,803.76/15,775.23
  6. Step 6: Final answer
    x = 12,009.13

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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.