Home / 30,520.65-42,075.12-22,440.06

Finding the Fourth Proportional to 30,520.65, 42,075.12 and 22,440.06

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Solution

The fourth proportional to 30,520.65, 42,075.12 and 22,440.06 is: 30,935.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,520.65 : 42,075.12 = 22,440.06 : x
  2. Step 2: Convert to fraction form
    30,520.65/42,075.12 = 22,440.06/x
  3. Step 3: Cross multiply
    30,520.65x = 42,075.12 × 22,440.06
  4. Step 4: Simplify right side
    30,520.65x = 944,168,217.31
  5. Step 5: Solve for x
    x = 944,168,217.31/30,520.65
  6. Step 6: Final answer
    x = 30,935.39

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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.