Home / 38,280.69-57,421.04-11,987.48

Finding the Fourth Proportional to 38,280.69, 57,421.04 and 11,987.48

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Solution

The fourth proportional to 38,280.69, 57,421.04 and 11,987.48 is: 17,981.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,280.69 : 57,421.04 = 11,987.48 : x
  2. Step 2: Convert to fraction form
    38,280.69/57,421.04 = 11,987.48/x
  3. Step 3: Cross multiply
    38,280.69x = 57,421.04 × 11,987.48
  4. Step 4: Simplify right side
    38,280.69x = 688,333,652.19
  5. Step 5: Solve for x
    x = 688,333,652.19/38,280.69
  6. Step 6: Final answer
    x = 17,981.22

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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.