Home / 28,547.34-42,831.14-12,750.92

Finding the Fourth Proportional to 28,547.34, 42,831.14 and 12,750.92

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Solution

The fourth proportional to 28,547.34, 42,831.14 and 12,750.92 is: 19,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.34 : 42,831.14 = 12,750.92 : x
  2. Step 2: Convert to fraction form
    28,547.34/42,831.14 = 12,750.92/x
  3. Step 3: Cross multiply
    28,547.34x = 42,831.14 × 12,750.92
  4. Step 4: Simplify right side
    28,547.34x = 546,136,439.65
  5. Step 5: Solve for x
    x = 546,136,439.65/28,547.34
  6. Step 6: Final answer
    x = 19,130.90

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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.