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Finding the Fourth Proportional to 28,599.35, 42,904.76 and 9,880.07

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Solution

The fourth proportional to 28,599.35, 42,904.76 and 9,880.07 is: 14,822.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,599.35 : 42,904.76 = 9,880.07 : x
  2. Step 2: Convert to fraction form
    28,599.35/42,904.76 = 9,880.07/x
  3. Step 3: Cross multiply
    28,599.35x = 42,904.76 × 9,880.07
  4. Step 4: Simplify right side
    28,599.35x = 423,901,768.21
  5. Step 5: Solve for x
    x = 423,901,768.21/28,599.35
  6. Step 6: Final answer
    x = 14,822.08

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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.