Home / 30,886.69-42,628.20-19,557.24

Finding the Fourth Proportional to 30,886.69, 42,628.20 and 19,557.24

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Solution

The fourth proportional to 30,886.69, 42,628.20 and 19,557.24 is: 26,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,886.69 : 42,628.20 = 19,557.24 : x
  2. Step 2: Convert to fraction form
    30,886.69/42,628.20 = 19,557.24/x
  3. Step 3: Cross multiply
    30,886.69x = 42,628.20 × 19,557.24
  4. Step 4: Simplify right side
    30,886.69x = 833,689,851.65
  5. Step 5: Solve for x
    x = 833,689,851.65/30,886.69
  6. Step 6: Final answer
    x = 26,991.88

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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.