Home / 28,316.79-42,478.43-9,590.40

Finding the Fourth Proportional to 28,316.79, 42,478.43 and 9,590.40

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Solution

The fourth proportional to 28,316.79, 42,478.43 and 9,590.40 is: 14,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.79 : 42,478.43 = 9,590.40 : x
  2. Step 2: Convert to fraction form
    28,316.79/42,478.43 = 9,590.40/x
  3. Step 3: Cross multiply
    28,316.79x = 42,478.43 × 9,590.40
  4. Step 4: Simplify right side
    28,316.79x = 407,385,087.12
  5. Step 5: Solve for x
    x = 407,385,087.12/28,316.79
  6. Step 6: Final answer
    x = 14,386.70

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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.