Home / 12,511.77-17,260.29-7,730.00

Finding the Fourth Proportional to 12,511.77, 17,260.29 and 7,730.00

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Solution

The fourth proportional to 12,511.77, 17,260.29 and 7,730.00 is: 10,663.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.77 : 17,260.29 = 7,730.00 : x
  2. Step 2: Convert to fraction form
    12,511.77/17,260.29 = 7,730.00/x
  3. Step 3: Cross multiply
    12,511.77x = 17,260.29 × 7,730.00
  4. Step 4: Simplify right side
    12,511.77x = 133,421,955.40
  5. Step 5: Solve for x
    x = 133,421,955.40/12,511.77
  6. Step 6: Final answer
    x = 10,663.72

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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.