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Finding the Fourth Proportional to 16,390.52, 22,615.53 and 10,420.01

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Solution

The fourth proportional to 16,390.52, 22,615.53 and 10,420.01 is: 14,377.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.52 : 22,615.53 = 10,420.01 : x
  2. Step 2: Convert to fraction form
    16,390.52/22,615.53 = 10,420.01/x
  3. Step 3: Cross multiply
    16,390.52x = 22,615.53 × 10,420.01
  4. Step 4: Simplify right side
    16,390.52x = 235,654,048.76
  5. Step 5: Solve for x
    x = 235,654,048.76/16,390.52
  6. Step 6: Final answer
    x = 14,377.46

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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.