Home / 28,742.49-39,664-15,995.18

Finding the Fourth Proportional to 28,742.49, 39,664 and 15,995.18

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Solution

The fourth proportional to 28,742.49, 39,664 and 15,995.18 is: 22,072.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,742.49 : 39,664 = 15,995.18 : x
  2. Step 2: Convert to fraction form
    28,742.49/39,664 = 15,995.18/x
  3. Step 3: Cross multiply
    28,742.49x = 39,664 × 15,995.18
  4. Step 4: Simplify right side
    28,742.49x = 634,432,819.52
  5. Step 5: Solve for x
    x = 634,432,819.52/28,742.49
  6. Step 6: Final answer
    x = 22,072.99

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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.