Home / 21,430.05-32,123.81-10,868.66

Finding the Fourth Proportional to 21,430.05, 32,123.81 and 10,868.66

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Solution

The fourth proportional to 21,430.05, 32,123.81 and 10,868.66 is: 16,292.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.05 : 32,123.81 = 10,868.66 : x
  2. Step 2: Convert to fraction form
    21,430.05/32,123.81 = 10,868.66/x
  3. Step 3: Cross multiply
    21,430.05x = 32,123.81 × 10,868.66
  4. Step 4: Simplify right side
    21,430.05x = 349,142,876.28
  5. Step 5: Solve for x
    x = 349,142,876.28/21,430.05
  6. Step 6: Final answer
    x = 16,292.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.