Home / 15,886.20-23,829.30-12,581.40

Finding the Fourth Proportional to 15,886.20, 23,829.30 and 12,581.40

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Solution

The fourth proportional to 15,886.20, 23,829.30 and 12,581.40 is: 18,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,886.20 : 23,829.30 = 12,581.40 : x
  2. Step 2: Convert to fraction form
    15,886.20/23,829.30 = 12,581.40/x
  3. Step 3: Cross multiply
    15,886.20x = 23,829.30 × 12,581.40
  4. Step 4: Simplify right side
    15,886.20x = 299,805,955.02
  5. Step 5: Solve for x
    x = 299,805,955.02/15,886.20
  6. Step 6: Final answer
    x = 18,872.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.