Home / 10,886.40-15,031.68-8,364.52

Finding the Fourth Proportional to 10,886.40, 15,031.68 and 8,364.52

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Solution

The fourth proportional to 10,886.40, 15,031.68 and 8,364.52 is: 11,549.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.40 : 15,031.68 = 8,364.52 : x
  2. Step 2: Convert to fraction form
    10,886.40/15,031.68 = 8,364.52/x
  3. Step 3: Cross multiply
    10,886.40x = 15,031.68 × 8,364.52
  4. Step 4: Simplify right side
    10,886.40x = 125,732,787.99
  5. Step 5: Solve for x
    x = 125,732,787.99/10,886.40
  6. Step 6: Final answer
    x = 11,549.53

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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.