Home / 14,947.95-20,478.77-14,387.43

Finding the Fourth Proportional to 14,947.95, 20,478.77 and 14,387.43

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Solution

The fourth proportional to 14,947.95, 20,478.77 and 14,387.43 is: 19,710.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,947.95 : 20,478.77 = 14,387.43 : x
  2. Step 2: Convert to fraction form
    14,947.95/20,478.77 = 14,387.43/x
  3. Step 3: Cross multiply
    14,947.95x = 20,478.77 × 14,387.43
  4. Step 4: Simplify right side
    14,947.95x = 294,636,869.86
  5. Step 5: Solve for x
    x = 294,636,869.86/14,947.95
  6. Step 6: Final answer
    x = 19,710.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.