Home / 28,510.36-42,765.53-12,711.31

Finding the Fourth Proportional to 28,510.36, 42,765.53 and 12,711.31

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Solution

The fourth proportional to 28,510.36, 42,765.53 and 12,711.31 is: 19,066.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.36 : 42,765.53 = 12,711.31 : x
  2. Step 2: Convert to fraction form
    28,510.36/42,765.53 = 12,711.31/x
  3. Step 3: Cross multiply
    28,510.36x = 42,765.53 × 12,711.31
  4. Step 4: Simplify right side
    28,510.36x = 543,605,909.14
  5. Step 5: Solve for x
    x = 543,605,909.14/28,510.36
  6. Step 6: Final answer
    x = 19,066.96

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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.