Home / 30,835.76-42,553.42-16,688.70

Finding the Fourth Proportional to 30,835.76, 42,553.42 and 16,688.70

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Solution

The fourth proportional to 30,835.76, 42,553.42 and 16,688.70 is: 23,030.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,835.76 : 42,553.42 = 16,688.70 : x
  2. Step 2: Convert to fraction form
    30,835.76/42,553.42 = 16,688.70/x
  3. Step 3: Cross multiply
    30,835.76x = 42,553.42 × 16,688.70
  4. Step 4: Simplify right side
    30,835.76x = 710,161,218.63
  5. Step 5: Solve for x
    x = 710,161,218.63/30,835.76
  6. Step 6: Final answer
    x = 23,030.45

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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.