Home / 31,410.79-47,132.13-20,888.13

Finding the Fourth Proportional to 31,410.79, 47,132.13 and 20,888.13

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Solution

The fourth proportional to 31,410.79, 47,132.13 and 20,888.13 is: 31,342.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,410.79 : 47,132.13 = 20,888.13 : x
  2. Step 2: Convert to fraction form
    31,410.79/47,132.13 = 20,888.13/x
  3. Step 3: Cross multiply
    31,410.79x = 47,132.13 × 20,888.13
  4. Step 4: Simplify right side
    31,410.79x = 984,501,931.08
  5. Step 5: Solve for x
    x = 984,501,931.08/31,410.79
  6. Step 6: Final answer
    x = 31,342.80

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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.