Home / 15,285.72-21,084.93-10,111.53

Finding the Fourth Proportional to 15,285.72, 21,084.93 and 10,111.53

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Solution

The fourth proportional to 15,285.72, 21,084.93 and 10,111.53 is: 13,947.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.72 : 21,084.93 = 10,111.53 : x
  2. Step 2: Convert to fraction form
    15,285.72/21,084.93 = 10,111.53/x
  3. Step 3: Cross multiply
    15,285.72x = 21,084.93 × 10,111.53
  4. Step 4: Simplify right side
    15,285.72x = 213,200,902.24
  5. Step 5: Solve for x
    x = 213,200,902.24/15,285.72
  6. Step 6: Final answer
    x = 13,947.72

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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.