Home / 30,684.04-42,346.18-18,749.66

Finding the Fourth Proportional to 30,684.04, 42,346.18 and 18,749.66

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Solution

The fourth proportional to 30,684.04, 42,346.18 and 18,749.66 is: 25,875.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,684.04 : 42,346.18 = 18,749.66 : x
  2. Step 2: Convert to fraction form
    30,684.04/42,346.18 = 18,749.66/x
  3. Step 3: Cross multiply
    30,684.04x = 42,346.18 × 18,749.66
  4. Step 4: Simplify right side
    30,684.04x = 793,976,477.30
  5. Step 5: Solve for x
    x = 793,976,477.30/30,684.04
  6. Step 6: Final answer
    x = 25,875.88

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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.