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Finding the Fourth Proportional to 29,295.94, 40,386.29 and 20,897.86

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Solution

The fourth proportional to 29,295.94, 40,386.29 and 20,897.86 is: 28,809.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,295.94 : 40,386.29 = 20,897.86 : x
  2. Step 2: Convert to fraction form
    29,295.94/40,386.29 = 20,897.86/x
  3. Step 3: Cross multiply
    29,295.94x = 40,386.29 × 20,897.86
  4. Step 4: Simplify right side
    29,295.94x = 843,987,034.34
  5. Step 5: Solve for x
    x = 843,987,034.34/29,295.94
  6. Step 6: Final answer
    x = 28,809.01

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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.