Home / 30,803.28-42,508.40-16,656.12

Finding the Fourth Proportional to 30,803.28, 42,508.40 and 16,656.12

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Solution

The fourth proportional to 30,803.28, 42,508.40 and 16,656.12 is: 22,985.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,803.28 : 42,508.40 = 16,656.12 : x
  2. Step 2: Convert to fraction form
    30,803.28/42,508.40 = 16,656.12/x
  3. Step 3: Cross multiply
    30,803.28x = 42,508.40 × 16,656.12
  4. Step 4: Simplify right side
    30,803.28x = 708,025,011.41
  5. Step 5: Solve for x
    x = 708,025,011.41/30,803.28
  6. Step 6: Final answer
    x = 22,985.38

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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.