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Finding the Fourth Proportional to 10,368.95, 15,557.94 and 5,437.40

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Solution

The fourth proportional to 10,368.95, 15,557.94 and 5,437.40 is: 8,158.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,368.95 : 15,557.94 = 5,437.40 : x
  2. Step 2: Convert to fraction form
    10,368.95/15,557.94 = 5,437.40/x
  3. Step 3: Cross multiply
    10,368.95x = 15,557.94 × 5,437.40
  4. Step 4: Simplify right side
    10,368.95x = 84,594,665.17
  5. Step 5: Solve for x
    x = 84,594,665.17/10,368.95
  6. Step 6: Final answer
    x = 8,158.46

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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.