Home / 21,390.48-32,086.08-5,807.70

Finding the Fourth Proportional to 21,390.48, 32,086.08 and 5,807.70

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Solution

The fourth proportional to 21,390.48, 32,086.08 and 5,807.70 is: 8,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.48 : 32,086.08 = 5,807.70 : x
  2. Step 2: Convert to fraction form
    21,390.48/32,086.08 = 5,807.70/x
  3. Step 3: Cross multiply
    21,390.48x = 32,086.08 × 5,807.70
  4. Step 4: Simplify right side
    21,390.48x = 186,346,326.82
  5. Step 5: Solve for x
    x = 186,346,326.82/21,390.48
  6. Step 6: Final answer
    x = 8,711.65

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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.