Home / 28,337.69-39,106.74-15,591.20

Finding the Fourth Proportional to 28,337.69, 39,106.74 and 15,591.20

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Solution

The fourth proportional to 28,337.69, 39,106.74 and 15,591.20 is: 21,516.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,337.69 : 39,106.74 = 15,591.20 : x
  2. Step 2: Convert to fraction form
    28,337.69/39,106.74 = 15,591.20/x
  3. Step 3: Cross multiply
    28,337.69x = 39,106.74 × 15,591.20
  4. Step 4: Simplify right side
    28,337.69x = 609,720,809.15
  5. Step 5: Solve for x
    x = 609,720,809.15/28,337.69
  6. Step 6: Final answer
    x = 21,516.25

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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.