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Finding the Fourth Proportional to 28,598.55, 42,904.57 and 9,878.74

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Solution

The fourth proportional to 28,598.55, 42,904.57 and 9,878.74 is: 14,820.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,598.55 : 42,904.57 = 9,878.74 : x
  2. Step 2: Convert to fraction form
    28,598.55/42,904.57 = 9,878.74/x
  3. Step 3: Cross multiply
    28,598.55x = 42,904.57 × 9,878.74
  4. Step 4: Simplify right side
    28,598.55x = 423,843,091.84
  5. Step 5: Solve for x
    x = 423,843,091.84/28,598.55
  6. Step 6: Final answer
    x = 14,820.44

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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.