Home / 18,875.16-28,304.55-9,509.40

Finding the Fourth Proportional to 18,875.16, 28,304.55 and 9,509.40

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Solution

The fourth proportional to 18,875.16, 28,304.55 and 9,509.40 is: 14,259.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,875.16 : 28,304.55 = 9,509.40 : x
  2. Step 2: Convert to fraction form
    18,875.16/28,304.55 = 9,509.40/x
  3. Step 3: Cross multiply
    18,875.16x = 28,304.55 × 9,509.40
  4. Step 4: Simplify right side
    18,875.16x = 269,159,287.77
  5. Step 5: Solve for x
    x = 269,159,287.77/18,875.16
  6. Step 6: Final answer
    x = 14,259.97

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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.