Home / 39,417.34-54,397.09-21,513.50

Finding the Fourth Proportional to 39,417.34, 54,397.09 and 21,513.50

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Solution

The fourth proportional to 39,417.34, 54,397.09 and 21,513.50 is: 29,689.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,417.34 : 54,397.09 = 21,513.50 : x
  2. Step 2: Convert to fraction form
    39,417.34/54,397.09 = 21,513.50/x
  3. Step 3: Cross multiply
    39,417.34x = 54,397.09 × 21,513.50
  4. Step 4: Simplify right side
    39,417.34x = 1,170,271,795.72
  5. Step 5: Solve for x
    x = 1,170,271,795.72/39,417.34
  6. Step 6: Final answer
    x = 29,689.26

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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.