Home / 15,775.02-21,725.23-15,430.57

Finding the Fourth Proportional to 15,775.02, 21,725.23 and 15,430.57

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Solution

The fourth proportional to 15,775.02, 21,725.23 and 15,430.57 is: 21,250.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,775.02 : 21,725.23 = 15,430.57 : x
  2. Step 2: Convert to fraction form
    15,775.02/21,725.23 = 15,430.57/x
  3. Step 3: Cross multiply
    15,775.02x = 21,725.23 × 15,430.57
  4. Step 4: Simplify right side
    15,775.02x = 335,232,573.65
  5. Step 5: Solve for x
    x = 335,232,573.65/15,775.02
  6. Step 6: Final answer
    x = 21,250.86

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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.