Home / 39,693.64-59,579.36-18,931.72

Finding the Fourth Proportional to 39,693.64, 59,579.36 and 18,931.72

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Solution

The fourth proportional to 39,693.64, 59,579.36 and 18,931.72 is: 28,416.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,693.64 : 59,579.36 = 18,931.72 : x
  2. Step 2: Convert to fraction form
    39,693.64/59,579.36 = 18,931.72/x
  3. Step 3: Cross multiply
    39,693.64x = 59,579.36 × 18,931.72
  4. Step 4: Simplify right side
    39,693.64x = 1,127,939,761.30
  5. Step 5: Solve for x
    x = 1,127,939,761.30/39,693.64
  6. Step 6: Final answer
    x = 28,416.13

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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.