Home / 42,925.80-64,378.98-19,220.88

Finding the Fourth Proportional to 42,925.80, 64,378.98 and 19,220.88

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Solution

The fourth proportional to 42,925.80, 64,378.98 and 19,220.88 is: 28,826.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,925.80 : 64,378.98 = 19,220.88 : x
  2. Step 2: Convert to fraction form
    42,925.80/64,378.98 = 19,220.88/x
  3. Step 3: Cross multiply
    42,925.80x = 64,378.98 × 19,220.88
  4. Step 4: Simplify right side
    42,925.80x = 1,237,420,649.10
  5. Step 5: Solve for x
    x = 1,237,420,649.10/42,925.80
  6. Step 6: Final answer
    x = 28,826.97

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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.