Home / 42,686.96-64,033.80-14,620.40

Finding the Fourth Proportional to 42,686.96, 64,033.80 and 14,620.40

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Solution

The fourth proportional to 42,686.96, 64,033.80 and 14,620.40 is: 21,931.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,686.96 : 64,033.80 = 14,620.40 : x
  2. Step 2: Convert to fraction form
    42,686.96/64,033.80 = 14,620.40/x
  3. Step 3: Cross multiply
    42,686.96x = 64,033.80 × 14,620.40
  4. Step 4: Simplify right side
    42,686.96x = 936,199,769.52
  5. Step 5: Solve for x
    x = 936,199,769.52/42,686.96
  6. Step 6: Final answer
    x = 21,931.75

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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.