Home / 30,810.34-42,518.23-16,663.15

Finding the Fourth Proportional to 30,810.34, 42,518.23 and 16,663.15

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Solution

The fourth proportional to 30,810.34, 42,518.23 and 16,663.15 is: 22,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.34 : 42,518.23 = 16,663.15 : x
  2. Step 2: Convert to fraction form
    30,810.34/42,518.23 = 16,663.15/x
  3. Step 3: Cross multiply
    30,810.34x = 42,518.23 × 16,663.15
  4. Step 4: Simplify right side
    30,810.34x = 708,487,431.63
  5. Step 5: Solve for x
    x = 708,487,431.63/30,810.34
  6. Step 6: Final answer
    x = 22,995.12

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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.