Home / 15,256.19-21,031.88-11,215.89

Finding the Fourth Proportional to 15,256.19, 21,031.88 and 11,215.89

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Solution

The fourth proportional to 15,256.19, 21,031.88 and 11,215.89 is: 15,462.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,256.19 : 21,031.88 = 11,215.89 : x
  2. Step 2: Convert to fraction form
    15,256.19/21,031.88 = 11,215.89/x
  3. Step 3: Cross multiply
    15,256.19x = 21,031.88 × 11,215.89
  4. Step 4: Simplify right side
    15,256.19x = 235,891,327.11
  5. Step 5: Solve for x
    x = 235,891,327.11/15,256.19
  6. Step 6: Final answer
    x = 15,462.00

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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.