Home / 30,378.02-45,566.64-10,387.31

Finding the Fourth Proportional to 30,378.02, 45,566.64 and 10,387.31

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Solution

The fourth proportional to 30,378.02, 45,566.64 and 10,387.31 is: 15,580.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.02 : 45,566.64 = 10,387.31 : x
  2. Step 2: Convert to fraction form
    30,378.02/45,566.64 = 10,387.31/x
  3. Step 3: Cross multiply
    30,378.02x = 45,566.64 × 10,387.31
  4. Step 4: Simplify right side
    30,378.02x = 473,314,815.34
  5. Step 5: Solve for x
    x = 473,314,815.34/30,378.02
  6. Step 6: Final answer
    x = 15,580.83

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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.