Home / 28,345.60-42,534.60-19,586.80

Finding the Fourth Proportional to 28,345.60, 42,534.60 and 19,586.80

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Solution

The fourth proportional to 28,345.60, 42,534.60 and 19,586.80 is: 29,391.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.60 : 42,534.60 = 19,586.80 : x
  2. Step 2: Convert to fraction form
    28,345.60/42,534.60 = 19,586.80/x
  3. Step 3: Cross multiply
    28,345.60x = 42,534.60 × 19,586.80
  4. Step 4: Simplify right side
    28,345.60x = 833,116,703.28
  5. Step 5: Solve for x
    x = 833,116,703.28/28,345.60
  6. Step 6: Final answer
    x = 29,391.39

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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.