Home / 30,453.84-42,013.08-18,359.28

Finding the Fourth Proportional to 30,453.84, 42,013.08 and 18,359.28

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Solution

The fourth proportional to 30,453.84, 42,013.08 and 18,359.28 is: 25,327.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,453.84 : 42,013.08 = 18,359.28 : x
  2. Step 2: Convert to fraction form
    30,453.84/42,013.08 = 18,359.28/x
  3. Step 3: Cross multiply
    30,453.84x = 42,013.08 × 18,359.28
  4. Step 4: Simplify right side
    30,453.84x = 771,329,899.38
  5. Step 5: Solve for x
    x = 771,329,899.38/30,453.84
  6. Step 6: Final answer
    x = 25,327.84

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Find fourth proportional to 30,454.84, 42,014.46 and 18,360.28
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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.