Home / 28,547.69-39,395.87-15,801.74

Finding the Fourth Proportional to 28,547.69, 39,395.87 and 15,801.74

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Solution

The fourth proportional to 28,547.69, 39,395.87 and 15,801.74 is: 21,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.69 : 39,395.87 = 15,801.74 : x
  2. Step 2: Convert to fraction form
    28,547.69/39,395.87 = 15,801.74/x
  3. Step 3: Cross multiply
    28,547.69x = 39,395.87 × 15,801.74
  4. Step 4: Simplify right side
    28,547.69x = 622,523,018.83
  5. Step 5: Solve for x
    x = 622,523,018.83/28,547.69
  6. Step 6: Final answer
    x = 21,806.43

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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.