Home / 18,931.10-28,352.88-18,275.00

Finding the Fourth Proportional to 18,931.10, 28,352.88 and 18,275.00

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Solution

The fourth proportional to 18,931.10, 28,352.88 and 18,275.00 is: 27,370.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.10 : 28,352.88 = 18,275.00 : x
  2. Step 2: Convert to fraction form
    18,931.10/28,352.88 = 18,275.00/x
  3. Step 3: Cross multiply
    18,931.10x = 28,352.88 × 18,275.00
  4. Step 4: Simplify right side
    18,931.10x = 518,148,740.24
  5. Step 5: Solve for x
    x = 518,148,740.24/18,931.10
  6. Step 6: Final answer
    x = 27,370.25

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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.