Home / 42,828.08-64,240.20-19,437.68

Finding the Fourth Proportional to 42,828.08, 64,240.20 and 19,437.68

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Solution

The fourth proportional to 42,828.08, 64,240.20 and 19,437.68 is: 29,155.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,828.08 : 64,240.20 = 19,437.68 : x
  2. Step 2: Convert to fraction form
    42,828.08/64,240.20 = 19,437.68/x
  3. Step 3: Cross multiply
    42,828.08x = 64,240.20 × 19,437.68
  4. Step 4: Simplify right side
    42,828.08x = 1,248,680,450.74
  5. Step 5: Solve for x
    x = 1,248,680,450.74/42,828.08
  6. Step 6: Final answer
    x = 29,155.65

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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.