Home / 30,770.16-42,488.04-19,457.96

Finding the Fourth Proportional to 30,770.16, 42,488.04 and 19,457.96

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Solution

The fourth proportional to 30,770.16, 42,488.04 and 19,457.96 is: 26,867.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,770.16 : 42,488.04 = 19,457.96 : x
  2. Step 2: Convert to fraction form
    30,770.16/42,488.04 = 19,457.96/x
  3. Step 3: Cross multiply
    30,770.16x = 42,488.04 × 19,457.96
  4. Step 4: Simplify right side
    30,770.16x = 826,730,582.80
  5. Step 5: Solve for x
    x = 826,730,582.80/30,770.16
  6. Step 6: Final answer
    x = 26,867.93

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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.