Home / 28,384.48-39,171.36-15,810.04

Finding the Fourth Proportional to 28,384.48, 39,171.36 and 15,810.04

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Solution

The fourth proportional to 28,384.48, 39,171.36 and 15,810.04 is: 21,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.48 : 39,171.36 = 15,810.04 : x
  2. Step 2: Convert to fraction form
    28,384.48/39,171.36 = 15,810.04/x
  3. Step 3: Cross multiply
    28,384.48x = 39,171.36 × 15,810.04
  4. Step 4: Simplify right side
    28,384.48x = 619,300,768.45
  5. Step 5: Solve for x
    x = 619,300,768.45/28,384.48
  6. Step 6: Final answer
    x = 21,818.29

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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.