Home / 55,988.20-84,014.70-20,931.40

Finding the Fourth Proportional to 55,988.20, 84,014.70 and 20,931.40

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Solution

The fourth proportional to 55,988.20, 84,014.70 and 20,931.40 is: 31,409.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,988.20 : 84,014.70 = 20,931.40 : x
  2. Step 2: Convert to fraction form
    55,988.20/84,014.70 = 20,931.40/x
  3. Step 3: Cross multiply
    55,988.20x = 84,014.70 × 20,931.40
  4. Step 4: Simplify right side
    55,988.20x = 1,758,545,291.58
  5. Step 5: Solve for x
    x = 1,758,545,291.58/55,988.20
  6. Step 6: Final answer
    x = 31,409.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.