Home / 39,720.08-59,581.20-12,018.08

Finding the Fourth Proportional to 39,720.08, 59,581.20 and 12,018.08

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Solution

The fourth proportional to 39,720.08, 59,581.20 and 12,018.08 is: 18,027.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.08 : 59,581.20 = 12,018.08 : x
  2. Step 2: Convert to fraction form
    39,720.08/59,581.20 = 12,018.08/x
  3. Step 3: Cross multiply
    39,720.08x = 59,581.20 × 12,018.08
  4. Step 4: Simplify right side
    39,720.08x = 716,051,628.10
  5. Step 5: Solve for x
    x = 716,051,628.10/39,720.08
  6. Step 6: Final answer
    x = 18,027.45

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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.