Home / 28,547.20-42,801.60-12,956.80

Finding the Fourth Proportional to 28,547.20, 42,801.60 and 12,956.80

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Solution

The fourth proportional to 28,547.20, 42,801.60 and 12,956.80 is: 19,426.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.20 : 42,801.60 = 12,956.80 : x
  2. Step 2: Convert to fraction form
    28,547.20/42,801.60 = 12,956.80/x
  3. Step 3: Cross multiply
    28,547.20x = 42,801.60 × 12,956.80
  4. Step 4: Simplify right side
    28,547.20x = 554,571,770.88
  5. Step 5: Solve for x
    x = 554,571,770.88/28,547.20
  6. Step 6: Final answer
    x = 19,426.49

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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.