Home / 30,967.25-42,727.47-18,221.00

Finding the Fourth Proportional to 30,967.25, 42,727.47 and 18,221.00

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Solution

The fourth proportional to 30,967.25, 42,727.47 and 18,221.00 is: 25,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,967.25 : 42,727.47 = 18,221.00 : x
  2. Step 2: Convert to fraction form
    30,967.25/42,727.47 = 18,221.00/x
  3. Step 3: Cross multiply
    30,967.25x = 42,727.47 × 18,221.00
  4. Step 4: Simplify right side
    30,967.25x = 778,537,017.23
  5. Step 5: Solve for x
    x = 778,537,017.23/30,967.25
  6. Step 6: Final answer
    x = 25,140.66

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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.