Home / 30,479.04-42,048.72-18,532.80

Finding the Fourth Proportional to 30,479.04, 42,048.72 and 18,532.80

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Solution

The fourth proportional to 30,479.04, 42,048.72 and 18,532.80 is: 25,567.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,479.04 : 42,048.72 = 18,532.80 : x
  2. Step 2: Convert to fraction form
    30,479.04/42,048.72 = 18,532.80/x
  3. Step 3: Cross multiply
    30,479.04x = 42,048.72 × 18,532.80
  4. Step 4: Simplify right side
    30,479.04x = 779,280,518.02
  5. Step 5: Solve for x
    x = 779,280,518.02/30,479.04
  6. Step 6: Final answer
    x = 25,567.75

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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.