Home / 28,136.30-42,225.20-13,345.26

Finding the Fourth Proportional to 28,136.30, 42,225.20 and 13,345.26

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Solution

The fourth proportional to 28,136.30, 42,225.20 and 13,345.26 is: 20,027.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.30 : 42,225.20 = 13,345.26 : x
  2. Step 2: Convert to fraction form
    28,136.30/42,225.20 = 13,345.26/x
  3. Step 3: Cross multiply
    28,136.30x = 42,225.20 × 13,345.26
  4. Step 4: Simplify right side
    28,136.30x = 563,506,205.83
  5. Step 5: Solve for x
    x = 563,506,205.83/28,136.30
  6. Step 6: Final answer
    x = 20,027.73

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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.