Home / 21,270.47-29,345.31-21,237.66

Finding the Fourth Proportional to 21,270.47, 29,345.31 and 21,237.66

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Solution

The fourth proportional to 21,270.47, 29,345.31 and 21,237.66 is: 29,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.47 : 29,345.31 = 21,237.66 : x
  2. Step 2: Convert to fraction form
    21,270.47/29,345.31 = 21,237.66/x
  3. Step 3: Cross multiply
    21,270.47x = 29,345.31 × 21,237.66
  4. Step 4: Simplify right side
    21,270.47x = 623,225,716.37
  5. Step 5: Solve for x
    x = 623,225,716.37/21,270.47
  6. Step 6: Final answer
    x = 29,300.05

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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.