Home / 39,158.31-54,038.50-21,253.32

Finding the Fourth Proportional to 39,158.31, 54,038.50 and 21,253.32

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Solution

The fourth proportional to 39,158.31, 54,038.50 and 21,253.32 is: 29,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,158.31 : 54,038.50 = 21,253.32 : x
  2. Step 2: Convert to fraction form
    39,158.31/54,038.50 = 21,253.32/x
  3. Step 3: Cross multiply
    39,158.31x = 54,038.50 × 21,253.32
  4. Step 4: Simplify right side
    39,158.31x = 1,148,497,599.24
  5. Step 5: Solve for x
    x = 1,148,497,599.24/39,158.31
  6. Step 6: Final answer
    x = 29,329.60

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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.