Home / 15,534.89-21,430.82-10,500.87

Finding the Fourth Proportional to 15,534.89, 21,430.82 and 10,500.87

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Solution

The fourth proportional to 15,534.89, 21,430.82 and 10,500.87 is: 14,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.89 : 21,430.82 = 10,500.87 : x
  2. Step 2: Convert to fraction form
    15,534.89/21,430.82 = 10,500.87/x
  3. Step 3: Cross multiply
    15,534.89x = 21,430.82 × 10,500.87
  4. Step 4: Simplify right side
    15,534.89x = 225,042,281.07
  5. Step 5: Solve for x
    x = 225,042,281.07/15,534.89
  6. Step 6: Final answer
    x = 14,486.25

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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.