Home / 15,288.61-21,097.28-8,574.19

Finding the Fourth Proportional to 15,288.61, 21,097.28 and 8,574.19

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Solution

The fourth proportional to 15,288.61, 21,097.28 and 8,574.19 is: 11,831.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.61 : 21,097.28 = 8,574.19 : x
  2. Step 2: Convert to fraction form
    15,288.61/21,097.28 = 8,574.19/x
  3. Step 3: Cross multiply
    15,288.61x = 21,097.28 × 8,574.19
  4. Step 4: Simplify right side
    15,288.61x = 180,891,981.72
  5. Step 5: Solve for x
    x = 180,891,981.72/15,288.61
  6. Step 6: Final answer
    x = 11,831.82

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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.