Home / 21,007.53-31,515.74-17,568.81

Finding the Fourth Proportional to 21,007.53, 31,515.74 and 17,568.81

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Solution

The fourth proportional to 21,007.53, 31,515.74 and 17,568.81 is: 26,356.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007.53 : 31,515.74 = 17,568.81 : x
  2. Step 2: Convert to fraction form
    21,007.53/31,515.74 = 17,568.81/x
  3. Step 3: Cross multiply
    21,007.53x = 31,515.74 × 17,568.81
  4. Step 4: Simplify right side
    21,007.53x = 553,693,960.23
  5. Step 5: Solve for x
    x = 553,693,960.23/21,007.53
  6. Step 6: Final answer
    x = 26,356.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.