Home / 15,812.38-21,822.47-8,740.18

Finding the Fourth Proportional to 15,812.38, 21,822.47 and 8,740.18

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Solution

The fourth proportional to 15,812.38, 21,822.47 and 8,740.18 is: 12,062.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.38 : 21,822.47 = 8,740.18 : x
  2. Step 2: Convert to fraction form
    15,812.38/21,822.47 = 8,740.18/x
  3. Step 3: Cross multiply
    15,812.38x = 21,822.47 × 8,740.18
  4. Step 4: Simplify right side
    15,812.38x = 190,732,315.84
  5. Step 5: Solve for x
    x = 190,732,315.84/15,812.38
  6. Step 6: Final answer
    x = 12,062.21

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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.