Home / 28,222.56-38,945.88-15,475.86

Finding the Fourth Proportional to 28,222.56, 38,945.88 and 15,475.86

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Solution

The fourth proportional to 28,222.56, 38,945.88 and 15,475.86 is: 21,356.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,222.56 : 38,945.88 = 15,475.86 : x
  2. Step 2: Convert to fraction form
    28,222.56/38,945.88 = 15,475.86/x
  3. Step 3: Cross multiply
    28,222.56x = 38,945.88 × 15,475.86
  4. Step 4: Simplify right side
    28,222.56x = 602,720,986.46
  5. Step 5: Solve for x
    x = 602,720,986.46/28,222.56
  6. Step 6: Final answer
    x = 21,356.00

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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.