Home / 42,453.36-63,678.96-20,282.40

Finding the Fourth Proportional to 42,453.36, 63,678.96 and 20,282.40

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Solution

The fourth proportional to 42,453.36, 63,678.96 and 20,282.40 is: 30,423.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,453.36 : 63,678.96 = 20,282.40 : x
  2. Step 2: Convert to fraction form
    42,453.36/63,678.96 = 20,282.40/x
  3. Step 3: Cross multiply
    42,453.36x = 63,678.96 × 20,282.40
  4. Step 4: Simplify right side
    42,453.36x = 1,291,562,138.30
  5. Step 5: Solve for x
    x = 1,291,562,138.30/42,453.36
  6. Step 6: Final answer
    x = 30,423.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.