Home / 21,357.32-29,457.54-14,271.32

Finding the Fourth Proportional to 21,357.32, 29,457.54 and 14,271.32

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Solution

The fourth proportional to 21,357.32, 29,457.54 and 14,271.32 is: 19,684.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357.32 : 29,457.54 = 14,271.32 : x
  2. Step 2: Convert to fraction form
    21,357.32/29,457.54 = 14,271.32/x
  3. Step 3: Cross multiply
    21,357.32x = 29,457.54 × 14,271.32
  4. Step 4: Simplify right side
    21,357.32x = 420,397,979.75
  5. Step 5: Solve for x
    x = 420,397,979.75/21,357.32
  6. Step 6: Final answer
    x = 19,684.02

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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.