Home / 42,620.10-63,969.54-21,574.91

Finding the Fourth Proportional to 42,620.10, 63,969.54 and 21,574.91

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Solution

The fourth proportional to 42,620.10, 63,969.54 and 21,574.91 is: 32,382.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,620.10 : 63,969.54 = 21,574.91 : x
  2. Step 2: Convert to fraction form
    42,620.10/63,969.54 = 21,574.91/x
  3. Step 3: Cross multiply
    42,620.10x = 63,969.54 × 21,574.91
  4. Step 4: Simplify right side
    42,620.10x = 1,380,137,068.24
  5. Step 5: Solve for x
    x = 1,380,137,068.24/42,620.10
  6. Step 6: Final answer
    x = 32,382.30

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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.