Home / 38,707.01-53,416.28-21,715.03

Finding the Fourth Proportional to 38,707.01, 53,416.28 and 21,715.03

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Solution

The fourth proportional to 38,707.01, 53,416.28 and 21,715.03 is: 29,967.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,707.01 : 53,416.28 = 21,715.03 : x
  2. Step 2: Convert to fraction form
    38,707.01/53,416.28 = 21,715.03/x
  3. Step 3: Cross multiply
    38,707.01x = 53,416.28 × 21,715.03
  4. Step 4: Simplify right side
    38,707.01x = 1,159,935,747.03
  5. Step 5: Solve for x
    x = 1,159,935,747.03/38,707.01
  6. Step 6: Final answer
    x = 29,967.08

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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.