Home / 12,864.40-17,750.80-7,825.93

Finding the Fourth Proportional to 12,864.40, 17,750.80 and 7,825.93

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Solution

The fourth proportional to 12,864.40, 17,750.80 and 7,825.93 is: 10,798.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.40 : 17,750.80 = 7,825.93 : x
  2. Step 2: Convert to fraction form
    12,864.40/17,750.80 = 7,825.93/x
  3. Step 3: Cross multiply
    12,864.40x = 17,750.80 × 7,825.93
  4. Step 4: Simplify right side
    12,864.40x = 138,916,518.24
  5. Step 5: Solve for x
    x = 138,916,518.24/12,864.40
  6. Step 6: Final answer
    x = 10,798.52

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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.