Home / 10,876.80-16,315.20-9,031.60

Finding the Fourth Proportional to 10,876.80, 16,315.20 and 9,031.60

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Solution

The fourth proportional to 10,876.80, 16,315.20 and 9,031.60 is: 13,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.80 : 16,315.20 = 9,031.60 : x
  2. Step 2: Convert to fraction form
    10,876.80/16,315.20 = 9,031.60/x
  3. Step 3: Cross multiply
    10,876.80x = 16,315.20 × 9,031.60
  4. Step 4: Simplify right side
    10,876.80x = 147,352,360.32
  5. Step 5: Solve for x
    x = 147,352,360.32/10,876.80
  6. Step 6: Final answer
    x = 13,547.40

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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.