Home / 28,006.64-42,011.88-9,285.92

Finding the Fourth Proportional to 28,006.64, 42,011.88 and 9,285.92

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Solution

The fourth proportional to 28,006.64, 42,011.88 and 9,285.92 is: 13,929.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.64 : 42,011.88 = 9,285.92 : x
  2. Step 2: Convert to fraction form
    28,006.64/42,011.88 = 9,285.92/x
  3. Step 3: Cross multiply
    28,006.64x = 42,011.88 × 9,285.92
  4. Step 4: Simplify right side
    28,006.64x = 390,118,956.73
  5. Step 5: Solve for x
    x = 390,118,956.73/28,006.64
  6. Step 6: Final answer
    x = 13,929.52

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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.