Home / 29,686.23-40,970.21-18,931.46

Finding the Fourth Proportional to 29,686.23, 40,970.21 and 18,931.46

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Solution

The fourth proportional to 29,686.23, 40,970.21 and 18,931.46 is: 26,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,686.23 : 40,970.21 = 18,931.46 : x
  2. Step 2: Convert to fraction form
    29,686.23/40,970.21 = 18,931.46/x
  3. Step 3: Cross multiply
    29,686.23x = 40,970.21 × 18,931.46
  4. Step 4: Simplify right side
    29,686.23x = 775,625,592.30
  5. Step 5: Solve for x
    x = 775,625,592.30/29,686.23
  6. Step 6: Final answer
    x = 26,127.45

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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.