Home / 10,070.80-15,106.19-3,145.30

Finding the Fourth Proportional to 10,070.80, 15,106.19 and 3,145.30

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Solution

The fourth proportional to 10,070.80, 15,106.19 and 3,145.30 is: 4,717.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,070.80 : 15,106.19 = 3,145.30 : x
  2. Step 2: Convert to fraction form
    10,070.80/15,106.19 = 3,145.30/x
  3. Step 3: Cross multiply
    10,070.80x = 15,106.19 × 3,145.30
  4. Step 4: Simplify right side
    10,070.80x = 47,513,499.41
  5. Step 5: Solve for x
    x = 47,513,499.41/10,070.80
  6. Step 6: Final answer
    x = 4,717.95

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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.