Home / 15,242.40-21,031.70-8,528.09

Finding the Fourth Proportional to 15,242.40, 21,031.70 and 8,528.09

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Solution

The fourth proportional to 15,242.40, 21,031.70 and 8,528.09 is: 11,767.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,242.40 : 21,031.70 = 8,528.09 : x
  2. Step 2: Convert to fraction form
    15,242.40/21,031.70 = 8,528.09/x
  3. Step 3: Cross multiply
    15,242.40x = 21,031.70 × 8,528.09
  4. Step 4: Simplify right side
    15,242.40x = 179,360,082.65
  5. Step 5: Solve for x
    x = 179,360,082.65/15,242.40
  6. Step 6: Final answer
    x = 11,767.18

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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.