Home / 15,287.15-21,097.28-8,573.21

Finding the Fourth Proportional to 15,287.15, 21,097.28 and 8,573.21

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Solution

The fourth proportional to 15,287.15, 21,097.28 and 8,573.21 is: 11,831.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.15 : 21,097.28 = 8,573.21 : x
  2. Step 2: Convert to fraction form
    15,287.15/21,097.28 = 8,573.21/x
  3. Step 3: Cross multiply
    15,287.15x = 21,097.28 × 8,573.21
  4. Step 4: Simplify right side
    15,287.15x = 180,871,411.87
  5. Step 5: Solve for x
    x = 180,871,411.87/15,287.15
  6. Step 6: Final answer
    x = 11,831.60

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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.