Home / 38,712-53,423.64-21,946.08

Finding the Fourth Proportional to 38,712, 53,423.64 and 21,946.08

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Solution

The fourth proportional to 38,712, 53,423.64 and 21,946.08 is: 30,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,712 : 53,423.64 = 21,946.08 : x
  2. Step 2: Convert to fraction form
    38,712/53,423.64 = 21,946.08/x
  3. Step 3: Cross multiply
    38,712x = 53,423.64 × 21,946.08
  4. Step 4: Simplify right side
    38,712x = 1,172,439,477.33
  5. Step 5: Solve for x
    x = 1,172,439,477.33/38,712
  6. Step 6: Final answer
    x = 30,286.20

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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.