Home / 42,809.28-64,239.28-19,435.36

Finding the Fourth Proportional to 42,809.28, 64,239.28 and 19,435.36

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Solution

The fourth proportional to 42,809.28, 64,239.28 and 19,435.36 is: 29,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,809.28 : 64,239.28 = 19,435.36 : x
  2. Step 2: Convert to fraction form
    42,809.28/64,239.28 = 19,435.36/x
  3. Step 3: Cross multiply
    42,809.28x = 64,239.28 × 19,435.36
  4. Step 4: Simplify right side
    42,809.28x = 1,248,513,532.94
  5. Step 5: Solve for x
    x = 1,248,513,532.94/42,809.28
  6. Step 6: Final answer
    x = 29,164.55

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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.