Home / 28,001.81-38,641.77-15,254.63

Finding the Fourth Proportional to 28,001.81, 38,641.77 and 15,254.63

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Solution

The fourth proportional to 28,001.81, 38,641.77 and 15,254.63 is: 21,051.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.81 : 38,641.77 = 15,254.63 : x
  2. Step 2: Convert to fraction form
    28,001.81/38,641.77 = 15,254.63/x
  3. Step 3: Cross multiply
    28,001.81x = 38,641.77 × 15,254.63
  4. Step 4: Simplify right side
    28,001.81x = 589,466,000.50
  5. Step 5: Solve for x
    x = 589,466,000.50/28,001.81
  6. Step 6: Final answer
    x = 21,051.00

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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.