Home / 38,704.20-53,417.74-21,715.32

Finding the Fourth Proportional to 38,704.20, 53,417.74 and 21,715.32

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Solution

The fourth proportional to 38,704.20, 53,417.74 and 21,715.32 is: 29,970.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,704.20 : 53,417.74 = 21,715.32 : x
  2. Step 2: Convert to fraction form
    38,704.20/53,417.74 = 21,715.32/x
  3. Step 3: Cross multiply
    38,704.20x = 53,417.74 × 21,715.32
  4. Step 4: Simplify right side
    38,704.20x = 1,159,983,317.78
  5. Step 5: Solve for x
    x = 1,159,983,317.78/38,704.20
  6. Step 6: Final answer
    x = 29,970.48

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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.