Home / 32,970.61-45,515.16-18,820.72

Finding the Fourth Proportional to 32,970.61, 45,515.16 and 18,820.72

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Solution

The fourth proportional to 32,970.61, 45,515.16 and 18,820.72 is: 25,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,970.61 : 45,515.16 = 18,820.72 : x
  2. Step 2: Convert to fraction form
    32,970.61/45,515.16 = 18,820.72/x
  3. Step 3: Cross multiply
    32,970.61x = 45,515.16 × 18,820.72
  4. Step 4: Simplify right side
    32,970.61x = 856,628,082.12
  5. Step 5: Solve for x
    x = 856,628,082.12/32,970.61
  6. Step 6: Final answer
    x = 25,981.57

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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.