Home / 37,686.12-52,007.70-20,920.20

Finding the Fourth Proportional to 37,686.12, 52,007.70 and 20,920.20

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Solution

The fourth proportional to 37,686.12, 52,007.70 and 20,920.20 is: 28,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,686.12 : 52,007.70 = 20,920.20 : x
  2. Step 2: Convert to fraction form
    37,686.12/52,007.70 = 20,920.20/x
  3. Step 3: Cross multiply
    37,686.12x = 52,007.70 × 20,920.20
  4. Step 4: Simplify right side
    37,686.12x = 1,088,011,485.54
  5. Step 5: Solve for x
    x = 1,088,011,485.54/37,686.12
  6. Step 6: Final answer
    x = 28,870.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.