Home / 21,712.40-29,969.00-12,762.77

Finding the Fourth Proportional to 21,712.40, 29,969.00 and 12,762.77

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Solution

The fourth proportional to 21,712.40, 29,969.00 and 12,762.77 is: 17,616.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.40 : 29,969.00 = 12,762.77 : x
  2. Step 2: Convert to fraction form
    21,712.40/29,969.00 = 12,762.77/x
  3. Step 3: Cross multiply
    21,712.40x = 29,969.00 × 12,762.77
  4. Step 4: Simplify right side
    21,712.40x = 382,487,240.47
  5. Step 5: Solve for x
    x = 382,487,240.47/21,712.40
  6. Step 6: Final answer
    x = 17,616.08

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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.