Home / 30,075.65-41,489.78-19,870.68

Finding the Fourth Proportional to 30,075.65, 41,489.78 and 19,870.68

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Solution

The fourth proportional to 30,075.65, 41,489.78 and 19,870.68 is: 27,411.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,075.65 : 41,489.78 = 19,870.68 : x
  2. Step 2: Convert to fraction form
    30,075.65/41,489.78 = 19,870.68/x
  3. Step 3: Cross multiply
    30,075.65x = 41,489.78 × 19,870.68
  4. Step 4: Simplify right side
    30,075.65x = 824,430,141.65
  5. Step 5: Solve for x
    x = 824,430,141.65/30,075.65
  6. Step 6: Final answer
    x = 27,411.88

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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.