Home / 20,510.70-28,303.05-12,011.67

Finding the Fourth Proportional to 20,510.70, 28,303.05 and 12,011.67

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Solution

The fourth proportional to 20,510.70, 28,303.05 and 12,011.67 is: 16,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.70 : 28,303.05 = 12,011.67 : x
  2. Step 2: Convert to fraction form
    20,510.70/28,303.05 = 12,011.67/x
  3. Step 3: Cross multiply
    20,510.70x = 28,303.05 × 12,011.67
  4. Step 4: Simplify right side
    20,510.70x = 339,966,896.59
  5. Step 5: Solve for x
    x = 339,966,896.59/20,510.70
  6. Step 6: Final answer
    x = 16,575.10

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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.