Home / 30,159.36-45,239.04-9,378.72

Finding the Fourth Proportional to 30,159.36, 45,239.04 and 9,378.72

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Solution

The fourth proportional to 30,159.36, 45,239.04 and 9,378.72 is: 14,068.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,159.36 : 45,239.04 = 9,378.72 : x
  2. Step 2: Convert to fraction form
    30,159.36/45,239.04 = 9,378.72/x
  3. Step 3: Cross multiply
    30,159.36x = 45,239.04 × 9,378.72
  4. Step 4: Simplify right side
    30,159.36x = 424,284,289.23
  5. Step 5: Solve for x
    x = 424,284,289.23/30,159.36
  6. Step 6: Final answer
    x = 14,068.08

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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.