Home / 30,710.43-42,385.44-19,386.12

Finding the Fourth Proportional to 30,710.43, 42,385.44 and 19,386.12

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Solution

The fourth proportional to 30,710.43, 42,385.44 and 19,386.12 is: 26,756.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,710.43 : 42,385.44 = 19,386.12 : x
  2. Step 2: Convert to fraction form
    30,710.43/42,385.44 = 19,386.12/x
  3. Step 3: Cross multiply
    30,710.43x = 42,385.44 × 19,386.12
  4. Step 4: Simplify right side
    30,710.43x = 821,689,226.09
  5. Step 5: Solve for x
    x = 821,689,226.09/30,710.43
  6. Step 6: Final answer
    x = 26,756.03

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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.