Home / 28,123.28-38,807.52-15,547.76

Finding the Fourth Proportional to 28,123.28, 38,807.52 and 15,547.76

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Solution

The fourth proportional to 28,123.28, 38,807.52 and 15,547.76 is: 21,454.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.28 : 38,807.52 = 15,547.76 : x
  2. Step 2: Convert to fraction form
    28,123.28/38,807.52 = 15,547.76/x
  3. Step 3: Cross multiply
    28,123.28x = 38,807.52 × 15,547.76
  4. Step 4: Simplify right side
    28,123.28x = 603,370,007.16
  5. Step 5: Solve for x
    x = 603,370,007.16/28,123.28
  6. Step 6: Final answer
    x = 21,454.47

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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.