Home / 21,628.04-29,802.41-15,953.80

Finding the Fourth Proportional to 21,628.04, 29,802.41 and 15,953.80

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Solution

The fourth proportional to 21,628.04, 29,802.41 and 15,953.80 is: 21,983.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.04 : 29,802.41 = 15,953.80 : x
  2. Step 2: Convert to fraction form
    21,628.04/29,802.41 = 15,953.80/x
  3. Step 3: Cross multiply
    21,628.04x = 29,802.41 × 15,953.80
  4. Step 4: Simplify right side
    21,628.04x = 475,461,688.66
  5. Step 5: Solve for x
    x = 475,461,688.66/21,628.04
  6. Step 6: Final answer
    x = 21,983.58

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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.