Home / 38,703.20-53,416.36-21,714.32

Finding the Fourth Proportional to 38,703.20, 53,416.36 and 21,714.32

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Solution

The fourth proportional to 38,703.20, 53,416.36 and 21,714.32 is: 29,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,703.20 : 53,416.36 = 21,714.32 : x
  2. Step 2: Convert to fraction form
    38,703.20/53,416.36 = 21,714.32/x
  3. Step 3: Cross multiply
    38,703.20x = 53,416.36 × 21,714.32
  4. Step 4: Simplify right side
    38,703.20x = 1,159,899,934.28
  5. Step 5: Solve for x
    x = 1,159,899,934.28/38,703.20
  6. Step 6: Final answer
    x = 29,969.10

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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.