Home / 21,457.05-29,620.89-14,298.88

Finding the Fourth Proportional to 21,457.05, 29,620.89 and 14,298.88

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Solution

The fourth proportional to 21,457.05, 29,620.89 and 14,298.88 is: 19,739.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.05 : 29,620.89 = 14,298.88 : x
  2. Step 2: Convert to fraction form
    21,457.05/29,620.89 = 14,298.88/x
  3. Step 3: Cross multiply
    21,457.05x = 29,620.89 × 14,298.88
  4. Step 4: Simplify right side
    21,457.05x = 423,545,533.09
  5. Step 5: Solve for x
    x = 423,545,533.09/21,457.05
  6. Step 6: Final answer
    x = 19,739.22

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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.