Home / 28,565.46-39,420.09-15,818.94

Finding the Fourth Proportional to 28,565.46, 39,420.09 and 15,818.94

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Solution

The fourth proportional to 28,565.46, 39,420.09 and 15,818.94 is: 21,830.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.46 : 39,420.09 = 15,818.94 : x
  2. Step 2: Convert to fraction form
    28,565.46/39,420.09 = 15,818.94/x
  3. Step 3: Cross multiply
    28,565.46x = 39,420.09 × 15,818.94
  4. Step 4: Simplify right side
    28,565.46x = 623,584,038.50
  5. Step 5: Solve for x
    x = 623,584,038.50/28,565.46
  6. Step 6: Final answer
    x = 21,830.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.