Home / 19,329.60-28,994.40-5,478.72

Finding the Fourth Proportional to 19,329.60, 28,994.40 and 5,478.72

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Solution

The fourth proportional to 19,329.60, 28,994.40 and 5,478.72 is: 8,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.60 : 28,994.40 = 5,478.72 : x
  2. Step 2: Convert to fraction form
    19,329.60/28,994.40 = 5,478.72/x
  3. Step 3: Cross multiply
    19,329.60x = 28,994.40 × 5,478.72
  4. Step 4: Simplify right side
    19,329.60x = 158,852,199.17
  5. Step 5: Solve for x
    x = 158,852,199.17/19,329.60
  6. Step 6: Final answer
    x = 8,218.08

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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.