Home / 38,421.40-53,021.77-21,426.72

Finding the Fourth Proportional to 38,421.40, 53,021.77 and 21,426.72

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Solution

The fourth proportional to 38,421.40, 53,021.77 and 21,426.72 is: 29,569.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.40 : 53,021.77 = 21,426.72 : x
  2. Step 2: Convert to fraction form
    38,421.40/53,021.77 = 21,426.72/x
  3. Step 3: Cross multiply
    38,421.40x = 53,021.77 × 21,426.72
  4. Step 4: Simplify right side
    38,421.40x = 1,136,082,512.56
  5. Step 5: Solve for x
    x = 1,136,082,512.56/38,421.40
  6. Step 6: Final answer
    x = 29,569.00

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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.