Home / 30,479.48-42,064.68-19,157.50

Finding the Fourth Proportional to 30,479.48, 42,064.68 and 19,157.50

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Solution

The fourth proportional to 30,479.48, 42,064.68 and 19,157.50 is: 26,439.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,479.48 : 42,064.68 = 19,157.50 : x
  2. Step 2: Convert to fraction form
    30,479.48/42,064.68 = 19,157.50/x
  3. Step 3: Cross multiply
    30,479.48x = 42,064.68 × 19,157.50
  4. Step 4: Simplify right side
    30,479.48x = 805,854,107.10
  5. Step 5: Solve for x
    x = 805,854,107.10/30,479.48
  6. Step 6: Final answer
    x = 26,439.23

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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.