Home / 30,088.92-45,140.59-9,312.42

Finding the Fourth Proportional to 30,088.92, 45,140.59 and 9,312.42

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Solution

The fourth proportional to 30,088.92, 45,140.59 and 9,312.42 is: 13,970.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,088.92 : 45,140.59 = 9,312.42 : x
  2. Step 2: Convert to fraction form
    30,088.92/45,140.59 = 9,312.42/x
  3. Step 3: Cross multiply
    30,088.92x = 45,140.59 × 9,312.42
  4. Step 4: Simplify right side
    30,088.92x = 420,368,133.13
  5. Step 5: Solve for x
    x = 420,368,133.13/30,088.92
  6. Step 6: Final answer
    x = 13,970.86

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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.