Home / 28,059.47-38,723-15,313.35

Finding the Fourth Proportional to 28,059.47, 38,723 and 15,313.35

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Solution

The fourth proportional to 28,059.47, 38,723 and 15,313.35 is: 21,132.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.47 : 38,723 = 15,313.35 : x
  2. Step 2: Convert to fraction form
    28,059.47/38,723 = 15,313.35/x
  3. Step 3: Cross multiply
    28,059.47x = 38,723 × 15,313.35
  4. Step 4: Simplify right side
    28,059.47x = 592,978,852.05
  5. Step 5: Solve for x
    x = 592,978,852.05/28,059.47
  6. Step 6: Final answer
    x = 21,132.93

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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.