Home / 28,238.34-38,971.06-15,663.08

Finding the Fourth Proportional to 28,238.34, 38,971.06 and 15,663.08

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Solution

The fourth proportional to 28,238.34, 38,971.06 and 15,663.08 is: 21,616.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,238.34 : 38,971.06 = 15,663.08 : x
  2. Step 2: Convert to fraction form
    28,238.34/38,971.06 = 15,663.08/x
  3. Step 3: Cross multiply
    28,238.34x = 38,971.06 × 15,663.08
  4. Step 4: Simplify right side
    28,238.34x = 610,406,830.46
  5. Step 5: Solve for x
    x = 610,406,830.46/28,238.34
  6. Step 6: Final answer
    x = 21,616.24

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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.