Home / 28,475.48-42,722.36-13,685.47

Finding the Fourth Proportional to 28,475.48, 42,722.36 and 13,685.47

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Solution

The fourth proportional to 28,475.48, 42,722.36 and 13,685.47 is: 20,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.48 : 42,722.36 = 13,685.47 : x
  2. Step 2: Convert to fraction form
    28,475.48/42,722.36 = 13,685.47/x
  3. Step 3: Cross multiply
    28,475.48x = 42,722.36 × 13,685.47
  4. Step 4: Simplify right side
    28,475.48x = 584,675,576.11
  5. Step 5: Solve for x
    x = 584,675,576.11/28,475.48
  6. Step 6: Final answer
    x = 20,532.60

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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.