Home / 30,646.41-42,282.32-18,703.77

Finding the Fourth Proportional to 30,646.41, 42,282.32 and 18,703.77

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Solution

The fourth proportional to 30,646.41, 42,282.32 and 18,703.77 is: 25,805.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,646.41 : 42,282.32 = 18,703.77 : x
  2. Step 2: Convert to fraction form
    30,646.41/42,282.32 = 18,703.77/x
  3. Step 3: Cross multiply
    30,646.41x = 42,282.32 × 18,703.77
  4. Step 4: Simplify right side
    30,646.41x = 790,838,641.48
  5. Step 5: Solve for x
    x = 790,838,641.48/30,646.41
  6. Step 6: Final answer
    x = 25,805.27

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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.