Home / 42,885.05-64,305.63-17,918.28

Finding the Fourth Proportional to 42,885.05, 64,305.63 and 17,918.28

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Solution

The fourth proportional to 42,885.05, 64,305.63 and 17,918.28 is: 26,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,885.05 : 64,305.63 = 17,918.28 : x
  2. Step 2: Convert to fraction form
    42,885.05/64,305.63 = 17,918.28/x
  3. Step 3: Cross multiply
    42,885.05x = 64,305.63 × 17,918.28
  4. Step 4: Simplify right side
    42,885.05x = 1,152,246,283.92
  5. Step 5: Solve for x
    x = 1,152,246,283.92/42,885.05
  6. Step 6: Final answer
    x = 26,868.25

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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.