Home / 13,681,111.52-18,875,349.60-7,879,777.12

Finding the Fourth Proportional to 13,681,111.52, 18,875,349.60 and 7,879,777.12

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Solution

The fourth proportional to 13,681,111.52, 18,875,349.60 and 7,879,777.12 is: 10,871,452.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681,111.52 : 18,875,349.60 = 7,879,777.12 : x
  2. Step 2: Convert to fraction form
    13,681,111.52/18,875,349.60 = 7,879,777.12/x
  3. Step 3: Cross multiply
    13,681,111.52x = 18,875,349.60 × 7,879,777.12
  4. Step 4: Simplify right side
    13,681,111.52x = 148,733,547,910,081.16
  5. Step 5: Solve for x
    x = 148,733,547,910,081.16/13,681,111.52
  6. Step 6: Final answer
    x = 10,871,452.05

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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.