Home / 30,669.48-42,331.14-19,485

Finding the Fourth Proportional to 30,669.48, 42,331.14 and 19,485

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Solution

The fourth proportional to 30,669.48, 42,331.14 and 19,485 is: 26,893.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,669.48 : 42,331.14 = 19,485 : x
  2. Step 2: Convert to fraction form
    30,669.48/42,331.14 = 19,485/x
  3. Step 3: Cross multiply
    30,669.48x = 42,331.14 × 19,485
  4. Step 4: Simplify right side
    30,669.48x = 824,822,262.90
  5. Step 5: Solve for x
    x = 824,822,262.90/30,669.48
  6. Step 6: Final answer
    x = 26,893.91

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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.