Home / 31,681.80-47,490.30-18,527.40

Finding the Fourth Proportional to 31,681.80, 47,490.30 and 18,527.40

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Solution

The fourth proportional to 31,681.80, 47,490.30 and 18,527.40 is: 27,772.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,681.80 : 47,490.30 = 18,527.40 : x
  2. Step 2: Convert to fraction form
    31,681.80/47,490.30 = 18,527.40/x
  3. Step 3: Cross multiply
    31,681.80x = 47,490.30 × 18,527.40
  4. Step 4: Simplify right side
    31,681.80x = 879,871,784.22
  5. Step 5: Solve for x
    x = 879,871,784.22/31,681.80
  6. Step 6: Final answer
    x = 27,772.15

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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.