Home / 30,858.80-42,585.16-16,711.68

Finding the Fourth Proportional to 30,858.80, 42,585.16 and 16,711.68

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Solution

The fourth proportional to 30,858.80, 42,585.16 and 16,711.68 is: 23,062.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,858.80 : 42,585.16 = 16,711.68 : x
  2. Step 2: Convert to fraction form
    30,858.80/42,585.16 = 16,711.68/x
  3. Step 3: Cross multiply
    30,858.80x = 42,585.16 × 16,711.68
  4. Step 4: Simplify right side
    30,858.80x = 711,669,566.67
  5. Step 5: Solve for x
    x = 711,669,566.67/30,858.80
  6. Step 6: Final answer
    x = 23,062.13

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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.