Home / 30,521.17-42,117.12-16,908.74

Finding the Fourth Proportional to 30,521.17, 42,117.12 and 16,908.74

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Solution

The fourth proportional to 30,521.17, 42,117.12 and 16,908.74 is: 23,332.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,521.17 : 42,117.12 = 16,908.74 : x
  2. Step 2: Convert to fraction form
    30,521.17/42,117.12 = 16,908.74/x
  3. Step 3: Cross multiply
    30,521.17x = 42,117.12 × 16,908.74
  4. Step 4: Simplify right side
    30,521.17x = 712,147,431.63
  5. Step 5: Solve for x
    x = 712,147,431.63/30,521.17
  6. Step 6: Final answer
    x = 23,332.90

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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.