Home / 28,136.55-42,225.57-13,345.51

Finding the Fourth Proportional to 28,136.55, 42,225.57 and 13,345.51

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Solution

The fourth proportional to 28,136.55, 42,225.57 and 13,345.51 is: 20,028.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.55 : 42,225.57 = 13,345.51 : x
  2. Step 2: Convert to fraction form
    28,136.55/42,225.57 = 13,345.51/x
  3. Step 3: Cross multiply
    28,136.55x = 42,225.57 × 13,345.51
  4. Step 4: Simplify right side
    28,136.55x = 563,521,766.69
  5. Step 5: Solve for x
    x = 563,521,766.69/28,136.55
  6. Step 6: Final answer
    x = 20,028.10

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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.