Home / 15,330.17-21,155.81-9,280.32

Finding the Fourth Proportional to 15,330.17, 21,155.81 and 9,280.32

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Solution

The fourth proportional to 15,330.17, 21,155.81 and 9,280.32 is: 12,806.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.17 : 21,155.81 = 9,280.32 : x
  2. Step 2: Convert to fraction form
    15,330.17/21,155.81 = 9,280.32/x
  3. Step 3: Cross multiply
    15,330.17x = 21,155.81 × 9,280.32
  4. Step 4: Simplify right side
    15,330.17x = 196,332,640.26
  5. Step 5: Solve for x
    x = 196,332,640.26/15,330.17
  6. Step 6: Final answer
    x = 12,806.95

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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.