Home / 30,828.24-42,538.32-19,492.20

Finding the Fourth Proportional to 30,828.24, 42,538.32 and 19,492.20

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Solution

The fourth proportional to 30,828.24, 42,538.32 and 19,492.20 is: 26,896.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,828.24 : 42,538.32 = 19,492.20 : x
  2. Step 2: Convert to fraction form
    30,828.24/42,538.32 = 19,492.20/x
  3. Step 3: Cross multiply
    30,828.24x = 42,538.32 × 19,492.20
  4. Step 4: Simplify right side
    30,828.24x = 829,165,441.10
  5. Step 5: Solve for x
    x = 829,165,441.10/30,828.24
  6. Step 6: Final answer
    x = 26,896.30

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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.