Home / 30,506.79-45,685.67-18,803.91

Finding the Fourth Proportional to 30,506.79, 45,685.67 and 18,803.91

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Solution

The fourth proportional to 30,506.79, 45,685.67 and 18,803.91 is: 28,159.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,506.79 : 45,685.67 = 18,803.91 : x
  2. Step 2: Convert to fraction form
    30,506.79/45,685.67 = 18,803.91/x
  3. Step 3: Cross multiply
    30,506.79x = 45,685.67 × 18,803.91
  4. Step 4: Simplify right side
    30,506.79x = 859,069,132.95
  5. Step 5: Solve for x
    x = 859,069,132.95/30,506.79
  6. Step 6: Final answer
    x = 28,159.93

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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.