Home / 42,708.68-64,076.70-19,328.84

Finding the Fourth Proportional to 42,708.68, 64,076.70 and 19,328.84

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Solution

The fourth proportional to 42,708.68, 64,076.70 and 19,328.84 is: 28,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,708.68 : 64,076.70 = 19,328.84 : x
  2. Step 2: Convert to fraction form
    42,708.68/64,076.70 = 19,328.84/x
  3. Step 3: Cross multiply
    42,708.68x = 64,076.70 × 19,328.84
  4. Step 4: Simplify right side
    42,708.68x = 1,238,528,282.03
  5. Step 5: Solve for x
    x = 1,238,528,282.03/42,708.68
  6. Step 6: Final answer
    x = 28,999.45

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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.