Home / 34,787.68-47,985.15-20,630.50

Finding the Fourth Proportional to 34,787.68, 47,985.15 and 20,630.50

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Solution

The fourth proportional to 34,787.68, 47,985.15 and 20,630.50 is: 28,457.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,787.68 : 47,985.15 = 20,630.50 : x
  2. Step 2: Convert to fraction form
    34,787.68/47,985.15 = 20,630.50/x
  3. Step 3: Cross multiply
    34,787.68x = 47,985.15 × 20,630.50
  4. Step 4: Simplify right side
    34,787.68x = 989,957,637.08
  5. Step 5: Solve for x
    x = 989,957,637.08/34,787.68
  6. Step 6: Final answer
    x = 28,457.13

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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.