Home / 39,570.21-54,607.86-21,665.16

Finding the Fourth Proportional to 39,570.21, 54,607.86 and 21,665.16

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Solution

The fourth proportional to 39,570.21, 54,607.86 and 21,665.16 is: 29,898.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,570.21 : 54,607.86 = 21,665.16 : x
  2. Step 2: Convert to fraction form
    39,570.21/54,607.86 = 21,665.16/x
  3. Step 3: Cross multiply
    39,570.21x = 54,607.86 × 21,665.16
  4. Step 4: Simplify right side
    39,570.21x = 1,183,088,024.16
  5. Step 5: Solve for x
    x = 1,183,088,024.16/39,570.21
  6. Step 6: Final answer
    x = 29,898.45

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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.