Home / 12,901.36-17,809.32-8,715.28

Finding the Fourth Proportional to 12,901.36, 17,809.32 and 8,715.28

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Solution

The fourth proportional to 12,901.36, 17,809.32 and 8,715.28 is: 12,030.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.36 : 17,809.32 = 8,715.28 : x
  2. Step 2: Convert to fraction form
    12,901.36/17,809.32 = 8,715.28/x
  3. Step 3: Cross multiply
    12,901.36x = 17,809.32 × 8,715.28
  4. Step 4: Simplify right side
    12,901.36x = 155,213,210.41
  5. Step 5: Solve for x
    x = 155,213,210.41/12,901.36
  6. Step 6: Final answer
    x = 12,030.76

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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.