Home / 15,075.16-20,803.68-8,360.62

Finding the Fourth Proportional to 15,075.16, 20,803.68 and 8,360.62

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Solution

The fourth proportional to 15,075.16, 20,803.68 and 8,360.62 is: 11,537.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.16 : 20,803.68 = 8,360.62 : x
  2. Step 2: Convert to fraction form
    15,075.16/20,803.68 = 8,360.62/x
  3. Step 3: Cross multiply
    15,075.16x = 20,803.68 × 8,360.62
  4. Step 4: Simplify right side
    15,075.16x = 173,931,663.08
  5. Step 5: Solve for x
    x = 173,931,663.08/15,075.16
  6. Step 6: Final answer
    x = 11,537.63

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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.