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Finding the Fourth Proportional to 35,417.49, 53,068.49 and 20,638.86

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Solution

The fourth proportional to 35,417.49, 53,068.49 and 20,638.86 is: 30,924.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,417.49 : 53,068.49 = 20,638.86 : x
  2. Step 2: Convert to fraction form
    35,417.49/53,068.49 = 20,638.86/x
  3. Step 3: Cross multiply
    35,417.49x = 53,068.49 × 20,638.86
  4. Step 4: Simplify right side
    35,417.49x = 1,095,272,766.98
  5. Step 5: Solve for x
    x = 1,095,272,766.98/35,417.49
  6. Step 6: Final answer
    x = 30,924.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.