Home / 28,510.36-39,342.70-15,762.79

Finding the Fourth Proportional to 28,510.36, 39,342.70 and 15,762.79

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Solution

The fourth proportional to 28,510.36, 39,342.70 and 15,762.79 is: 21,751.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.36 : 39,342.70 = 15,762.79 : x
  2. Step 2: Convert to fraction form
    28,510.36/39,342.70 = 15,762.79/x
  3. Step 3: Cross multiply
    28,510.36x = 39,342.70 × 15,762.79
  4. Step 4: Simplify right side
    28,510.36x = 620,150,787.01
  5. Step 5: Solve for x
    x = 620,150,787.01/28,510.36
  6. Step 6: Final answer
    x = 21,751.77

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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.