Home / 30,970.35-42,737.49-16,823.16

Finding the Fourth Proportional to 30,970.35, 42,737.49 and 16,823.16

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Solution

The fourth proportional to 30,970.35, 42,737.49 and 16,823.16 is: 23,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,970.35 : 42,737.49 = 16,823.16 : x
  2. Step 2: Convert to fraction form
    30,970.35/42,737.49 = 16,823.16/x
  3. Step 3: Cross multiply
    30,970.35x = 42,737.49 × 16,823.16
  4. Step 4: Simplify right side
    30,970.35x = 718,979,632.27
  5. Step 5: Solve for x
    x = 718,979,632.27/30,970.35
  6. Step 6: Final answer
    x = 23,215.10

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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.