Home / 30,426.64-41,988.40-16,999.20

Finding the Fourth Proportional to 30,426.64, 41,988.40 and 16,999.20

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Solution

The fourth proportional to 30,426.64, 41,988.40 and 16,999.20 is: 23,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,426.64 : 41,988.40 = 16,999.20 : x
  2. Step 2: Convert to fraction form
    30,426.64/41,988.40 = 16,999.20/x
  3. Step 3: Cross multiply
    30,426.64x = 41,988.40 × 16,999.20
  4. Step 4: Simplify right side
    30,426.64x = 713,769,209.28
  5. Step 5: Solve for x
    x = 713,769,209.28/30,426.64
  6. Step 6: Final answer
    x = 23,458.69

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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.