Home / 28,281.34-39,027.18-15,706.90

Finding the Fourth Proportional to 28,281.34, 39,027.18 and 15,706.90

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Solution

The fourth proportional to 28,281.34, 39,027.18 and 15,706.90 is: 21,674.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.34 : 39,027.18 = 15,706.90 : x
  2. Step 2: Convert to fraction form
    28,281.34/39,027.18 = 15,706.90/x
  3. Step 3: Cross multiply
    28,281.34x = 39,027.18 × 15,706.90
  4. Step 4: Simplify right side
    28,281.34x = 612,996,013.54
  5. Step 5: Solve for x
    x = 612,996,013.54/28,281.34
  6. Step 6: Final answer
    x = 21,674.93

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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.