Home / 30,873.80-42,606.54-18,130.64

Finding the Fourth Proportional to 30,873.80, 42,606.54 and 18,130.64

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Solution

The fourth proportional to 30,873.80, 42,606.54 and 18,130.64 is: 25,020.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,873.80 : 42,606.54 = 18,130.64 : x
  2. Step 2: Convert to fraction form
    30,873.80/42,606.54 = 18,130.64/x
  3. Step 3: Cross multiply
    30,873.80x = 42,606.54 × 18,130.64
  4. Step 4: Simplify right side
    30,873.80x = 772,483,838.39
  5. Step 5: Solve for x
    x = 772,483,838.39/30,873.80
  6. Step 6: Final answer
    x = 25,020.69

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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.