Home / 11,031.80-16,547.70-8,574.20

Finding the Fourth Proportional to 11,031.80, 16,547.70 and 8,574.20

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Solution

The fourth proportional to 11,031.80, 16,547.70 and 8,574.20 is: 12,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.80 : 16,547.70 = 8,574.20 : x
  2. Step 2: Convert to fraction form
    11,031.80/16,547.70 = 8,574.20/x
  3. Step 3: Cross multiply
    11,031.80x = 16,547.70 × 8,574.20
  4. Step 4: Simplify right side
    11,031.80x = 141,883,289.34
  5. Step 5: Solve for x
    x = 141,883,289.34/11,031.80
  6. Step 6: Final answer
    x = 12,861.30

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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.