Home / 38,428.10-53,030.66-21,432.36

Finding the Fourth Proportional to 38,428.10, 53,030.66 and 21,432.36

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Solution

The fourth proportional to 38,428.10, 53,030.66 and 21,432.36 is: 29,576.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,428.10 : 53,030.66 = 21,432.36 : x
  2. Step 2: Convert to fraction form
    38,428.10/53,030.66 = 21,432.36/x
  3. Step 3: Cross multiply
    38,428.10x = 53,030.66 × 21,432.36
  4. Step 4: Simplify right side
    38,428.10x = 1,136,572,196.16
  5. Step 5: Solve for x
    x = 1,136,572,196.16/38,428.10
  6. Step 6: Final answer
    x = 29,576.59

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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.