Home / 12,740.65-17,581.50-7,075.75

Finding the Fourth Proportional to 12,740.65, 17,581.50 and 7,075.75

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Solution

The fourth proportional to 12,740.65, 17,581.50 and 7,075.75 is: 9,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.65 : 17,581.50 = 7,075.75 : x
  2. Step 2: Convert to fraction form
    12,740.65/17,581.50 = 7,075.75/x
  3. Step 3: Cross multiply
    12,740.65x = 17,581.50 × 7,075.75
  4. Step 4: Simplify right side
    12,740.65x = 124,402,298.63
  5. Step 5: Solve for x
    x = 124,402,298.63/12,740.65
  6. Step 6: Final answer
    x = 9,764.20

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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.