Home / 28,045.53-38,699.84-15,470.28

Finding the Fourth Proportional to 28,045.53, 38,699.84 and 15,470.28

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Solution

The fourth proportional to 28,045.53, 38,699.84 and 15,470.28 is: 21,347.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.53 : 38,699.84 = 15,470.28 : x
  2. Step 2: Convert to fraction form
    28,045.53/38,699.84 = 15,470.28/x
  3. Step 3: Cross multiply
    28,045.53x = 38,699.84 × 15,470.28
  4. Step 4: Simplify right side
    28,045.53x = 598,697,399.43
  5. Step 5: Solve for x
    x = 598,697,399.43/28,045.53
  6. Step 6: Final answer
    x = 21,347.34

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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.