Home / 30,903.81-42,631.56-19,554.18

Finding the Fourth Proportional to 30,903.81, 42,631.56 and 19,554.18

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Solution

The fourth proportional to 30,903.81, 42,631.56 and 19,554.18 is: 26,974.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,903.81 : 42,631.56 = 19,554.18 : x
  2. Step 2: Convert to fraction form
    30,903.81/42,631.56 = 19,554.18/x
  3. Step 3: Cross multiply
    30,903.81x = 42,631.56 × 19,554.18
  4. Step 4: Simplify right side
    30,903.81x = 833,625,197.92
  5. Step 5: Solve for x
    x = 833,625,197.92/30,903.81
  6. Step 6: Final answer
    x = 26,974.84

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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.