Home / 38,710.32-53,430.12-21,953.04

Finding the Fourth Proportional to 38,710.32, 53,430.12 and 21,953.04

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Solution

The fourth proportional to 38,710.32, 53,430.12 and 21,953.04 is: 30,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,710.32 : 53,430.12 = 21,953.04 : x
  2. Step 2: Convert to fraction form
    38,710.32/53,430.12 = 21,953.04/x
  3. Step 3: Cross multiply
    38,710.32x = 53,430.12 × 21,953.04
  4. Step 4: Simplify right side
    38,710.32x = 1,172,953,561.56
  5. Step 5: Solve for x
    x = 1,172,953,561.56/38,710.32
  6. Step 6: Final answer
    x = 30,300.80

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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.