Home / 12,312.48-16,991.52-7,007.88

Finding the Fourth Proportional to 12,312.48, 16,991.52 and 7,007.88

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Solution

The fourth proportional to 12,312.48, 16,991.52 and 7,007.88 is: 9,671.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.48 : 16,991.52 = 7,007.88 : x
  2. Step 2: Convert to fraction form
    12,312.48/16,991.52 = 7,007.88/x
  3. Step 3: Cross multiply
    12,312.48x = 16,991.52 × 7,007.88
  4. Step 4: Simplify right side
    12,312.48x = 119,074,533.18
  5. Step 5: Solve for x
    x = 119,074,533.18/12,312.48
  6. Step 6: Final answer
    x = 9,671.04

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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.