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Finding the Fourth Proportional to 34,695.76, 47,880.04 and 18,780.08

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Solution

The fourth proportional to 34,695.76, 47,880.04 and 18,780.08 is: 25,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,695.76 : 47,880.04 = 18,780.08 : x
  2. Step 2: Convert to fraction form
    34,695.76/47,880.04 = 18,780.08/x
  3. Step 3: Cross multiply
    34,695.76x = 47,880.04 × 18,780.08
  4. Step 4: Simplify right side
    34,695.76x = 899,190,981.60
  5. Step 5: Solve for x
    x = 899,190,981.60/34,695.76
  6. Step 6: Final answer
    x = 25,916.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.