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Finding the Fourth Proportional to 29,686.68, 40,973.40 and 19,615.68

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Solution

The fourth proportional to 29,686.68, 40,973.40 and 19,615.68 is: 27,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,686.68 : 40,973.40 = 19,615.68 : x
  2. Step 2: Convert to fraction form
    29,686.68/40,973.40 = 19,615.68/x
  3. Step 3: Cross multiply
    29,686.68x = 40,973.40 × 19,615.68
  4. Step 4: Simplify right side
    29,686.68x = 803,721,102.91
  5. Step 5: Solve for x
    x = 803,721,102.91/29,686.68
  6. Step 6: Final answer
    x = 27,073.46

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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.