Home / 30,095.28-45,127.80-12,560.40

Finding the Fourth Proportional to 30,095.28, 45,127.80 and 12,560.40

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Solution

The fourth proportional to 30,095.28, 45,127.80 and 12,560.40 is: 18,834.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,095.28 : 45,127.80 = 12,560.40 : x
  2. Step 2: Convert to fraction form
    30,095.28/45,127.80 = 12,560.40/x
  3. Step 3: Cross multiply
    30,095.28x = 45,127.80 × 12,560.40
  4. Step 4: Simplify right side
    30,095.28x = 566,823,219.12
  5. Step 5: Solve for x
    x = 566,823,219.12/30,095.28
  6. Step 6: Final answer
    x = 18,834.29

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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.